Apple Releases Revised macOS Catalina Supplemental Update

Apple today released a new supplemental update for macOS Catalina, nearly one week after releasing the first supplemental update and two weeks after the launch of ‌macOS Catalina‌.

The update can be downloaded through the Software Update section of the System Preferences app, but it may be limited to those who didn’t download the first supplemental update as it appears to be a minor incremental change that offers the same release notes as the first version.


The ‌‌macOS Catalina‌‌ Supplemental Update includes installation and reliability improvements, and is recommended for all users.

This update:

– Improves installation reliability of ‌‌macOS Catalina‌‌ on Macs with low disk space

– Fixes an issue that prevented Setup Assistant from completing during some installations

– Resolves an issue that prevents accepting iCloud Terms and Conditions when multiple ‌‌iCloud‌‌ accounts are logged in

– Improves the reliability of saving Game Center data when playing Apple Arcade games offline

Apple is also working on a ‌macOS Catalina‌ 10.15.1 update, which is available to developers at the current time.

Related Roundup: macOS Catalina

This article, “Apple Releases Revised macOS Catalina Supplemental Update” first appeared on MacRumors.com

Discuss this article in our forums

Apple today released a new supplemental update for macOS Catalina, nearly one week after releasing the first supplemental update and two weeks after the launch of ‌macOS Catalina‌.

The update can be downloaded through the Software Update section of the System Preferences app, but it may be limited to those who didn't download the first supplemental update as it appears to be a minor incremental change that offers the same release notes as the first version.

The ‌‌macOS Catalina‌‌ Supplemental Update includes installation and reliability improvements, and is recommended for all users.

This update:
- Improves installation reliability of ‌‌macOS Catalina‌‌ on Macs with low disk space
- Fixes an issue that prevented Setup Assistant from completing during some installations
- Resolves an issue that prevents accepting iCloud Terms and Conditions when multiple ‌‌iCloud‌‌ accounts are logged in
- Improves the reliability of saving Game Center data when playing Apple Arcade games offline
Apple is also working on a ‌macOS Catalina‌ 10.15.1 update, which is available to developers at the current time.

Related Roundup: macOS Catalina

This article, "Apple Releases Revised macOS Catalina Supplemental Update" first appeared on MacRumors.com

Discuss this article in our forums

Apple Seeds Second Beta of Upcoming macOS Catalina 10.15.1 Update to Developers

Apple today seeded the second beta of an upcoming macOS Catalina 10.15.1 update to developers, a little under a week after seeding the first beta and a week and a half after releasing macOS Catalina to the public.

The new ‌macOS Catalina‌ beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.


The first update to ‌macOS Catalina‌ is minor in scale and appears to focus on performance improvements and fixes for bugs that weren’t able to be addressed in the first version of Catalina. An interim supplemental update was released just two days ago with some other bug fixes that needed to be addressed before 10.15.1 was ready.

Apple’s release notes for the first beta said that the update introduces support for the AMD Navi RDNA eGPU architecture and brings some changes to Photos.

You can now filter by Favorites, Edited, ‌‌Photos‌‌, Videos, or Keywords in the All ‌‌Photos‌‌ view, and you can choose View > Metadata > Titles to enable titles and filenames in the All ‌‌Photos‌‌ View.

‌macOS Catalina‌ is a major update that eliminates iTunes in favor of new Music, Podcasts, and TV apps, nixes support for 32-bit apps, adds a new Find My app, brings a new ‌Photos‌ interface, and includes multiple privacy enhancements and other app refinements.

For full details on what’s new in ‌macOS Catalina‌, make sure to check out our macOS Catalina roundup.

Related Roundup: macOS Catalina

This article, “Apple Seeds Second Beta of Upcoming macOS Catalina 10.15.1 Update to Developers” first appeared on MacRumors.com

Discuss this article in our forums

Apple today seeded the second beta of an upcoming macOS Catalina 10.15.1 update to developers, a little under a week after seeding the first beta and a week and a half after releasing macOS Catalina to the public.

The new ‌macOS Catalina‌ beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.


The first update to ‌macOS Catalina‌ is minor in scale and appears to focus on performance improvements and fixes for bugs that weren't able to be addressed in the first version of Catalina. An interim supplemental update was released just two days ago with some other bug fixes that needed to be addressed before 10.15.1 was ready.

Apple's release notes for the first beta said that the update introduces support for the AMD Navi RDNA eGPU architecture and brings some changes to Photos.

You can now filter by Favorites, Edited, ‌‌Photos‌‌, Videos, or Keywords in the All ‌‌Photos‌‌ view, and you can choose View > Metadata > Titles to enable titles and filenames in the All ‌‌Photos‌‌ View.

‌macOS Catalina‌ is a major update that eliminates iTunes in favor of new Music, Podcasts, and TV apps, nixes support for 32-bit apps, adds a new Find My app, brings a new ‌Photos‌ interface, and includes multiple privacy enhancements and other app refinements.

For full details on what's new in ‌macOS Catalina‌, make sure to check out our macOS Catalina roundup.

Related Roundup: macOS Catalina

This article, "Apple Seeds Second Beta of Upcoming macOS Catalina 10.15.1 Update to Developers" first appeared on MacRumors.com

Discuss this article in our forums

Apple Releases macOS Catalina Supplemental Update With Fixes for Installation, iCloud Login, and Game Center Bugs

Alongside iOS 13.1.3, Apple today also released a supplemental update for macOS Catalina, addressing several bugs from the initial public release version, including a problem with Setup Assistant hanging during Catalina installation.


The ‌macOS Catalina‌ Supplemental Update includes installation and reliability improvements, and is recommended for all users.



This update:

– Improves installation reliability of ‌macOS Catalina‌ on Macs with low disk space

– Fixes an issue that prevented Setup Assistant from completing during some installations

– Resolves an issue that prevents accepting iCloud Terms and Conditions when multiple ‌iCloud‌ accounts are logged in

– Improves the reliability of saving Game Center data when playing Apple Arcade games offline

Today’s supplemental update comes ahead of macOS 10.15.1, which was seeded as an initial developer beta last Friday.

Related Roundup: macOS Catalina

This article, “Apple Releases macOS Catalina Supplemental Update With Fixes for Installation, iCloud Login, and Game Center Bugs” first appeared on MacRumors.com

Discuss this article in our forums

Alongside iOS 13.1.3, Apple today also released a supplemental update for macOS Catalina, addressing several bugs from the initial public release version, including a problem with Setup Assistant hanging during Catalina installation.


The ‌macOS Catalina‌ Supplemental Update includes installation and reliability improvements, and is recommended for all users.

This update:
- Improves installation reliability of ‌macOS Catalina‌ on Macs with low disk space
- Fixes an issue that prevented Setup Assistant from completing during some installations
- Resolves an issue that prevents accepting iCloud Terms and Conditions when multiple ‌iCloud‌ accounts are logged in
- Improves the reliability of saving Game Center data when playing Apple Arcade games offline
Today's supplemental update comes ahead of macOS 10.15.1, which was seeded as an initial developer beta last Friday.

Related Roundup: macOS Catalina

This article, "Apple Releases macOS Catalina Supplemental Update With Fixes for Installation, iCloud Login, and Game Center Bugs" first appeared on MacRumors.com

Discuss this article in our forums

Relocated Items in macOS Catalina Explained

After upgrading to macOS Catalina, you may be surprised to discover a shortcut on your Mac’s desktop to a Relocated Items folder that wasn’t there previously. The generation of this folder is actually normal behavior when upgrading an older version of macOS to Catalina, but we’re highlighting it in this article because a lot of users are confused about why the folder exists and what to do with its contents.

What Are Relocated Items?

Relocated items are older files and data from previous macOS installations that Apple is not sure what to do with after upgrading to Catalina.

Catalina is the first version of macOS to adopt wholesale the relatively new Apple File System (APFS), which is optimized for the flash storage used in recent Macs. Aside from introducing a bunch of other new technical features, an APFS-formatted disk uses a space-sharing “container” that can house multiple secure “volumes” or file systems. This allows the disk’s free space to be shared on demand and allocated to any of the individual volumes in the container as required.

When you upgrade to macOS 10.15, Catalina is installed on a dedicated read-only system volume called “Macintosh HD,” while your files and data are stored separately in another volume named “Macintosh HD – Data.” The idea behind this setup is that it helps prevent the accidental overwriting of critical operating system files, since the user can no longer alter data or store files on the read-only system volume.


In practice, the average user shouldn’t notice any difference after the split, since both volumes appear in Finder as a single unified Macintosh HD volume (although if you want, you can view them separately in Disk Utility).

However, during the upgrade process, files or data that were previously stored in the startup volume are now stored in the new Macintosh – HD Data volume, and Catalina may not be able to find a corresponding home for them there. That’s where the Relocated Items folder comes in.

The Relocated Items Folder

While creating the two separate volumes during the upgrade process, Catalina reviews the files and data on your hard drive to check that they’re valid, authorized, and in the correct location. Any files and data that couldn’t be stored on the Macintosh HD – Data volume in a folder equivalent to their original location, are placed in the Relocated Items folder. This folder also includes a PDF document with more details about these files.

Amongst a bunch of other things that you may not recognize, the folder can include configuration files that were modified by you, by another user, or by an app. Regardless, the modifications make them incompatible with ‌macOS Catalina‌ and are considered redundant as far as the system is concerned.

Can I Delete the Relocated Items Folder?

It’s worth reiterating that the Relocated Items folder you see on the Desktop is just a shortcut that can be safely deleted. Doing so will not remove the folder or its contents from your hard disk. You can find the actual folder in /Users/Shared/Relocated Items.

Whether or not you delete the Relocated Items folder proper is entirely up to you. Removing the contents should be safe as far as your Mac’s operating system goes. But, if you have any third-party apps that don’t work since you updated to Catalina, then the Relocated Items folder may well contain data related to them, but it likely needs updating by the developers in new versions of these apps. If you recognize custom configuration files in the Relocated Items folder, then you might want to keep them around for reference in case you want to recreate them at a later date.

If your Relocated Items folder isn’t very big, then simply remove the Relocated Items shortcut on your Desktop to remove the eyesore and carry on. But if you feel strongly about deleting the actual files, see below.

How to Delete the Relocated Items folder

To delete the actual Relocated Items folder, simply drag it into the Trash and then empty the Trash folder. Having said that, some of the contents may resist being deleted when you come to empty the Trash because of old security permissions on the relocated files.


If that’s the case, one way to get rid of the files is to disable system integrity protection (SIP) on your Mac. The following steps explain how to disable SIP, but before you go ahead, note that the process involves rebooting your Mac and using Terminal. If you’re not familiar with the Terminal command prompt, or if you have any other misgivings about the steps, our advice is to just leave the Relocated Items folder where it is, or move it elsewhere out of sight. MacRumors cannot be held responsible for any data loss.

  1. If the Relocated Items folder is in your Trash, right-click it there and select Put Back from the contextual pop-up menu.
  2. Restart your Mac via the Restart… option in the Apple menu bar, and when the boot cycle starts again, hold down the Command and R keys to enter Recovery mode.
  3. From the Recovery screen menu bar, select Utilities -> Terminal.
  4. Type csrutil disable and hit Enter.
  5. Restart your Mac via the Restart option in the menu bar.
  6. Now delete the Relocated Items folder, then empty the Trash.
  7. Restart your Mac and enter Recovery mode again using Command-R.
  8. From the Recovery screen menu bar, select Utilities -> Terminal.
  9. Type csrutil enable and press Enter to re-enable SIP.
  10. Restart your Mac via the Restart option the menu bar.

Once you’ve followed these steps, the contents of the Relocated Items folder should be gone from your system for good.

Related Roundup: macOS Catalina

This article, “Relocated Items in macOS Catalina Explained” first appeared on MacRumors.com

Discuss this article in our forums

After upgrading to macOS Catalina, you may be surprised to discover a shortcut on your Mac's desktop to a Relocated Items folder that wasn't there previously. The generation of this folder is actually normal behavior when upgrading an older version of macOS to Catalina, but we're highlighting it in this article because a lot of users are confused about why the folder exists and what to do with its contents.

What Are Relocated Items?


Relocated items are older files and data from previous macOS installations that Apple is not sure what to do with after upgrading to Catalina.

Catalina is the first version of macOS to adopt wholesale the relatively new Apple File System (APFS), which is optimized for the flash storage used in recent Macs. Aside from introducing a bunch of other new technical features, an APFS-formatted disk uses a space-sharing "container" that can house multiple secure "volumes" or file systems. This allows the disk's free space to be shared on demand and allocated to any of the individual volumes in the container as required.

When you upgrade to macOS 10.15, Catalina is installed on a dedicated read-only system volume called "Macintosh HD," while your files and data are stored separately in another volume named "Macintosh HD - Data." The idea behind this setup is that it helps prevent the accidental overwriting of critical operating system files, since the user can no longer alter data or store files on the read-only system volume.


In practice, the average user shouldn't notice any difference after the split, since both volumes appear in Finder as a single unified Macintosh HD volume (although if you want, you can view them separately in Disk Utility).

However, during the upgrade process, files or data that were previously stored in the startup volume are now stored in the new Macintosh - HD Data volume, and Catalina may not be able to find a corresponding home for them there. That's where the Relocated Items folder comes in.

The Relocated Items Folder


While creating the two separate volumes during the upgrade process, Catalina reviews the files and data on your hard drive to check that they're valid, authorized, and in the correct location. Any files and data that couldn't be stored on the Macintosh HD - Data volume in a folder equivalent to their original location, are placed in the Relocated Items folder. This folder also includes a PDF document with more details about these files.

Amongst a bunch of other things that you may not recognize, the folder can include configuration files that were modified by you, by another user, or by an app. Regardless, the modifications make them incompatible with ‌macOS Catalina‌ and are considered redundant as far as the system is concerned.

Can I Delete the Relocated Items Folder?


It's worth reiterating that the Relocated Items folder you see on the Desktop is just a shortcut that can be safely deleted. Doing so will not remove the folder or its contents from your hard disk. You can find the actual folder in /Users/Shared/Relocated Items.

Whether or not you delete the Relocated Items folder proper is entirely up to you. Removing the contents should be safe as far as your Mac's operating system goes. But, if you have any third-party apps that don't work since you updated to Catalina, then the Relocated Items folder may well contain data related to them, but it likely needs updating by the developers in new versions of these apps. If you recognize custom configuration files in the Relocated Items folder, then you might want to keep them around for reference in case you want to recreate them at a later date.

If your Relocated Items folder isn't very big, then simply remove the Relocated Items shortcut on your Desktop to remove the eyesore and carry on. But if you feel strongly about deleting the actual files, see below.

How to Delete the Relocated Items folder


To delete the actual Relocated Items folder, simply drag it into the Trash and then empty the Trash folder. Having said that, some of the contents may resist being deleted when you come to empty the Trash because of old security permissions on the relocated files.


If that's the case, one way to get rid of the files is to disable system integrity protection (SIP) on your Mac. The following steps explain how to disable SIP, but before you go ahead, note that the process involves rebooting your Mac and using Terminal. If you're not familiar with the Terminal command prompt, or if you have any other misgivings about the steps, our advice is to just leave the Relocated Items folder where it is, or move it elsewhere out of sight. MacRumors cannot be held responsible for any data loss.

  1. If the Relocated Items folder is in your Trash, right-click it there and select Put Back from the contextual pop-up menu.

  2. Restart your Mac via the Restart... option in the Apple menu bar, and when the boot cycle starts again, hold down the Command and R keys to enter Recovery mode.

  3. From the Recovery screen menu bar, select Utilities -> Terminal.

  4. Type csrutil disable and hit Enter.

  5. Restart your Mac via the Restart option in the menu bar.

  6. Now delete the Relocated Items folder, then empty the Trash.

  7. Restart your Mac and enter Recovery mode again using Command-R.

  8. From the Recovery screen menu bar, select Utilities -> Terminal.

  9. Type csrutil enable and press Enter to re-enable SIP.

  10. Restart your Mac via the Restart option the menu bar.
Once you've followed these steps, the contents of the Relocated Items folder should be gone from your system for good.

Related Roundup: macOS Catalina

This article, "Relocated Items in macOS Catalina Explained" first appeared on MacRumors.com

Discuss this article in our forums

PSA: Apple Mail Bugs Can Lead to Data Loss in macOS Catalina

Michael Tsai, the developer of EagleFiler and the SpamSieve plug-in for Apple Mail on Mac, has written a blog post warning macOS users about potential data loss in Mail when upgrading to macOS Catalina 10.15.0 (build 19A583).

According to Tsai, he’s heard from several users that updating Mail’s data store from Mojave to Catalina sometimes says that it has succeeded, when in fact on closer inspection it turns out that large numbers of messages are incomplete or missing entirely.

In addition, users have reported the loss of message content when moving emails between mailboxes. From Tsai’s post:

Moving messages between mailboxes, both via drag-and-drop and AppleScript, can result in a blank message (only headers) on the Mac. If the message was moved to a server mailbox, other devices see the message as deleted. And eventually this syncs back to the first Mac, where the message disappears as well.

Tsai warns that these issues are particularly pernicious because users may not realize anything’s wrong unless they look at affected messages or mailboxes. Since the data is synced to the server, these problems can also propagate to other computers and devices, and relying on backups is difficult because Mail data is continually changing and there’s no easy way to merge restored data with messages received since the last backup.

Despite the latter risk, it’s still good practice to make backups, but Tsai notes that Apple Support appears to be erroneously advising users that lost Mail data in Catalina can’t be recovered from a Time Machine backup made using macOS Mojave.

According to Tsai, this is not the case: Apple Mail’s File -> Import Mailboxes… menu bar option can be used to selectively import them into Mail in Catalina as new local mailboxes.

Tsai says he’s unsure whether these issues are due to Mail bugs or to other factors such as problems on the Mac or with the mail server. Apple released ‌macOS Catalina‌ 10.15.1 beta to developers on Friday, but it’s still unclear if this version resolves the Mail app bugs. Regardless, Tsai’s advice to users who rely on Apple Mail is to “hold off on updating to Catalina for now.”

Affected readers can find the full breakdown of the issues here. Have you had problems with Mail since updating to Catalina? Let us know in the comments below.

Related Roundup: macOS Catalina
Tag: Mail

This article, “PSA: Apple Mail Bugs Can Lead to Data Loss in macOS Catalina” first appeared on MacRumors.com

Discuss this article in our forums

Michael Tsai, the developer of EagleFiler and the SpamSieve plug-in for Apple Mail on Mac, has written a blog post warning macOS users about potential data loss in Mail when upgrading to macOS Catalina 10.15.0 (build 19A583).

According to Tsai, he's heard from several users that updating Mail's data store from Mojave to Catalina sometimes says that it has succeeded, when in fact on closer inspection it turns out that large numbers of messages are incomplete or missing entirely.

In addition, users have reported the loss of message content when moving emails between mailboxes. From Tsai's post:
Moving messages between mailboxes, both via drag-and-drop and AppleScript, can result in a blank message (only headers) on the Mac. If the message was moved to a server mailbox, other devices see the message as deleted. And eventually this syncs back to the first Mac, where the message disappears as well.
Tsai warns that these issues are particularly pernicious because users may not realize anything's wrong unless they look at affected messages or mailboxes. Since the data is synced to the server, these problems can also propagate to other computers and devices, and relying on backups is difficult because Mail data is continually changing and there's no easy way to merge restored data with messages received since the last backup.

Despite the latter risk, it's still good practice to make backups, but Tsai notes that Apple Support appears to be erroneously advising users that lost Mail data in Catalina can't be recovered from a Time Machine backup made using macOS Mojave.

According to Tsai, this is not the case: Apple Mail's File -> Import Mailboxes... menu bar option can be used to selectively import them into Mail in Catalina as new local mailboxes.

Tsai says he's unsure whether these issues are due to Mail bugs or to other factors such as problems on the Mac or with the mail server. Apple released ‌macOS Catalina‌ 10.15.1 beta to developers on Friday, but it's still unclear if this version resolves the Mail app bugs. Regardless, Tsai's advice to users who rely on Apple Mail is to "hold off on updating to Catalina for now."

Affected readers can find the full breakdown of the issues here. Have you had problems with Mail since updating to Catalina? Let us know in the comments below.

Related Roundup: macOS Catalina
Tag: Mail

This article, "PSA: Apple Mail Bugs Can Lead to Data Loss in macOS Catalina" first appeared on MacRumors.com

Discuss this article in our forums

Apple Releases First Beta of Upcoming macOS Catalina 10.15.1 Update

Apple today seeded the first beta of an upcoming macOS Catalina 10.15.1 update to developers, just days after releasing macOS Catalina to the public.

The new ‌macOS Catalina‌ beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.


It’s not yet known what improvements the first update to ‌macOS Catalina‌ will bring, but it likely includes performance improvements and fixes for bugs that weren’t able to be addressed in the first version of Catalina.

‌macOS Catalina‌ is a major update that eliminates iTunes in favor of new Music, Podcasts, and TV apps, nixes support for 32-bit apps, adds a new Find My app, brings a new Photos interface, and includes multiple privacy enhancements and other app refinements.

For full details on what’s new in ‌macOS Catalina‌, make sure to check out our macOS Catalina roundup.

Related Roundup: macOS Catalina

This article, “Apple Releases First Beta of Upcoming macOS Catalina 10.15.1 Update” first appeared on MacRumors.com

Discuss this article in our forums

Apple today seeded the first beta of an upcoming macOS Catalina 10.15.1 update to developers, just days after releasing macOS Catalina to the public.

The new ‌macOS Catalina‌ beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.


It's not yet known what improvements the first update to ‌macOS Catalina‌ will bring, but it likely includes performance improvements and fixes for bugs that weren't able to be addressed in the first version of Catalina.

‌macOS Catalina‌ is a major update that eliminates iTunes in favor of new Music, Podcasts, and TV apps, nixes support for 32-bit apps, adds a new Find My app, brings a new Photos interface, and includes multiple privacy enhancements and other app refinements.

For full details on what's new in ‌macOS Catalina‌, make sure to check out our macOS Catalina roundup.

Related Roundup: macOS Catalina

This article, "Apple Releases First Beta of Upcoming macOS Catalina 10.15.1 Update" first appeared on MacRumors.com

Discuss this article in our forums

How to Perform a Clean Installation of macOS 10.15 Catalina

This article guides you through the process of performing a clean installation of macOS 10.15 Catalina using the bootable USB drive method, rather than upgrading your Mac using Apple’s standard installation package, which retains existing user data and any user-installed apps.


Creating a bootable USB drive provides you with a convenient way to install a fresh copy of macOS Catalina on multiple Macs. Performing a clean install can also remove annoying quirks and strange behaviors that your Mac may have inherited over time, and often helps to reclaim disk space caused by junk files left by third-party apps.

To follow the steps in this article, you’ll need an empty 16GB or larger USB thumb drive (USB-C or USB-A, depending on your Mac) and an hour or two of downtime while the installation procedure completes.

Also, be sure to perform a full backup of your Mac beforehand using Time Machine, so that you can restore your original system from the Recovery partition if something goes wrong.


Compatibility Check

‌macOS Catalina‌ is a major update that introduces a range of new features and changes including cross-platform app support for third-party apps, no more iTunes, iPad as a second screen functionality, Screen Time, and more.

Every Mac that can run macOS Mojave will run ‌macOS Catalina‌, with the exception of the mid-2010 and mid-2012 Mac Pro models. The full list of compatible Mac models is as follows:

To check if your Mac is compatible, open the Apple () menu in the upper left corner of your Mac’s screen and select About This Mac. Look just below the OS X version number in the Overview tab – if the Mac model name is the same or a later model year than the one shown in the compatibility list above, your Mac is compatible with ‌macOS Catalina‌.

How to Perform a Clean Install of ‌macOS Catalina‌

  1. Download ‌macOS Catalina‌ from the Mac App Store [Direct Link].

    Mac App Store
  2. Once the download is complete, close the installer window by selecting the Quit Install macOS option in the menu bar or using the keyboard shortcut Command (⌘) + Q.
  3. Launch the Terminal app (found in Applications/Utilities/Terminal).
  4. At the Terminal command prompt, type sudo followed by a space.

  5. Next, open a Finder window, navigate to your Applications folder, right-click (or Ctrl-click) on the macOS 10.14 installer, and select Show Package Contents from the contextual dropdown menu.
  6. Navigate to Contents -> Resources within the installer package.
  7. Drag the createinstallmedia file into the Terminal window.

  8. Still in the Terminal window, type –volume /Volumes/XXXXX –/Applications/Install\ macOS\ Catalina.app but replace XXXXX with the name of the USB drive you intend to use as a bootable installer.

    terminal
  9. Once you’ve replaced XXXXX in the last step with the name of the USB drive, press the Enter key on your keyboard to run the completed Terminal command.
  10. Enter your administrator password when prompted.
  11. Type Y and press Enter when prompted, and the command will create your bootable Catalina installer on the USB drive. This will take a few minutes to complete, so leave it running until you see the message “Install media now available.” Note that if you’re asked whether you want to install Xcode during the process, you can safely click Not Now and the process will complete successfully regardless.

Restart and Install

You can install Catalina on your Mac as soon as the USB installer has been created. To do so, restart your Mac and hold down the Option (⌥) key as soon as you hear the reboot tone. Then follow these steps:

  1. Use the mouse pointer or the arrow keys on your keyboard to select the disk called Install ‌macOS Catalina‌ in the drive list that appears on the screen.
  2. Once the USB drive has booted, select Disk Utility from the Utilities window, choose your Mac’s startup drive from the list, and click Erase.
  3. When your Mac’s startup disk is formatted, return to the Utilities window and select Install macOS, choose your freshly erased startup drive when asked where to install the OS, and follow the onscreen prompts to complete the installation.

To install Catalina on another Mac, first make sure it’s powered off, then simply plug in the USB installer you created and turn the Mac on. When you hear the boot tone, hold down the Option (⌥) key and follow the three steps above.

Related Roundup: macOS Catalina

This article, “How to Perform a Clean Installation of macOS 10.15 Catalina” first appeared on MacRumors.com

Discuss this article in our forums

This article guides you through the process of performing a clean installation of macOS 10.15 Catalina using the bootable USB drive method, rather than upgrading your Mac using Apple's standard installation package, which retains existing user data and any user-installed apps.


Creating a bootable USB drive provides you with a convenient way to install a fresh copy of macOS Catalina on multiple Macs. Performing a clean install can also remove annoying quirks and strange behaviors that your Mac may have inherited over time, and often helps to reclaim disk space caused by junk files left by third-party apps.

To follow the steps in this article, you'll need an empty 16GB or larger USB thumb drive (USB-C or USB-A, depending on your Mac) and an hour or two of downtime while the installation procedure completes.

Also, be sure to perform a full backup of your Mac beforehand using Time Machine, so that you can restore your original system from the Recovery partition if something goes wrong.
Continue reading "How to Perform a Clean Installation of macOS 10.15 Catalina"

Apple’s Mac App Notarization Service Experiencing Slowness Following Release of macOS Catalina

In June, Apple announced that all Developer ID-signed software distributed outside the Mac App Store must be submitted for notarization by Apple in order to run by default on macOS Catalina.


Following the release of  macOS Catalina  this week, however, some developers have found the notarization process to be very slow. Apple’s system status page reflects this, noting that some users may be experiencing performance issues with its Developer ID notary service since Wednesday afternoon.

Apple says it is working to resolve the problem, but in the meantime, some developers have turned to Twitter to voice their frustration:

It took Apple’s servers 10 hours to notarize my app for  macOS Catalina . 🧐

Hoping this delay is temporary—a few months ago it only took a hour.

— John Balestrieri (@johnbalestrieri) October 10, 2019

mood: angry. @Apple requires apps notarization for  macOS Catalina  but their servers can’t keep up with all submitted files and you have to wait for hours for successful notarization. What a shame.

— Vladislav Rassokhin (@Vlad_P53) October 10, 2019

I think Apple’s notarization server may have died under the Catalina induced load. I submitted a dmg 4+ hours ago. Still “in progress”.

— ross tulloch (@RossTulloch) October 10, 2019

Ok, so now that everybody is notarizing their apps at the same time.. it’s painfully slow. Who would have thought that Apple would build a required feature that does not scale?

— Frank Reiff (@frankreiff) October 10, 2019

Developers can submit their apps for notarization by Apple’s automated system using Xcode 10 or later.

Related Roundup: macOS Catalina

This article, “Apple’s Mac App Notarization Service Experiencing Slowness Following Release of macOS Catalina” first appeared on MacRumors.com

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In June, Apple announced that all Developer ID-signed software distributed outside the Mac App Store must be submitted for notarization by Apple in order to run by default on macOS Catalina.


Following the release of  macOS Catalina  this week, however, some developers have found the notarization process to be very slow. Apple's system status page reflects this, noting that some users may be experiencing performance issues with its Developer ID notary service since Wednesday afternoon.

Apple says it is working to resolve the problem, but in the meantime, some developers have turned to Twitter to voice their frustration:
Developers can submit their apps for notarization by Apple's automated system using Xcode 10 or later.

Related Roundup: macOS Catalina

This article, "Apple's Mac App Notarization Service Experiencing Slowness Following Release of macOS Catalina" first appeared on MacRumors.com

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macOS Catalina’s Biggest Changes: What to Check Out After Upgrading

macOS Catalina, which came out on Monday, is the newest version of the operating system that runs on the Mac. Catalina brings some significant changes, including the removal of the iTunes app, a new Sidecar feature, an updated Find My app, and more.

In our latest YouTube video and in the article below, we’re going to go over some must-know  macOS Catalina  features that will be useful to those who have just updated and want to familiarize themselves with the changes.

Subscribe to the MacRumors YouTube channel for more videos.

  • No More iTunes – Apple removed iTunes in  macOS Catalina , splitting it up into three new apps: Music, TV, and Podcasts. These three apps offer all of the functionality that was previously in iTunes, so you can still get to your music library, access TV shows and movies you purchased, and listen to your favorite podcasts. You can still make iTunes Store purchases, too.
  • Finder Syncing – Since there’s no iTunes app, you won’t use iTunes to manage your devices that are plugged in. Instead, when you plug in an iPhone or iPad to your Mac, you’ll see it in the left side of the Finder window where you can get to all the same controls you had in iTunes.
  • Apple Watch Password Authentication – You’ve long been able to unlock a Mac with an  Apple Watch , but in  macOS Catalina , the  Apple Watch  can also be used to authenticate passwords or approve app installations when you double tap on the Side button. This is especially handy on Macs that don’t have Touch ID. Get to the settings by opening up System Preferences and choosing the Security and Privacy section.
  •  Sidecar  –  Sidecar  is a new feature in  macOS Catalina  that lets you use your  iPad  as a secondary display. The easiest way to activate  Sidecar  is to click on the AirPlay icon on the Mac. If you have a Sidecar-compatible  iPad , it will show up in the list of available devices.  Sidecar  is limited to newer Macs and on the  iPad , it only works with iPads that support the Apple Pencil. Make sure to check out our Sidecar guide for more info.
  •  iPad  Apps for Mac – Apple in  macOS Catalina  introduced new “Catalyst” developer tools that are designed to make it easier for developers to port their  iPad  apps to the Mac, which means you can expect some of your favorite iOS apps to be available on the Mac. Catalyst apps are still rolling out, but some high-profile options are already available like GoodNotes 5, Carrot Weather, HabitMinder, and more.
  •  Find My  – There’s a new  Find My  app on the Mac, which brings a dedicated app for finding friends and devices for the first time.  Find My  combines  Find My  Mac and  Find My  Friends, so it’s the one-stop shop for whatever you’re looking for.  Find My  even lets you find your Mac when it’s closed and has no WiFi connection by leveraging a Bluetooth connection to other iPhones and Apple devices that are nearby. The new  Find My  capabilities give you a better chance of finding a lost or stolen device.
  • No More 32-Bit Apps –  macOS Catalina  does not support 32-bit apps, which means some older apps might not work after upgrading. This mostly only applies to apps that haven’t been updated in a long time, but it’s still something that may take users by surprise. For more info, make sure to check out our 32-bit Mac app guide.

Many of the apps on the Mac have been overhauled with new features. Reminders, for example, has a whole new look and an easier to use interface, while Photos has a new view that organizes everything by day, month, or year. Notes lets you share folders for the first time, and there’s a Picture by Picture option in Safari.

For a full rundown on all of the features that you’ll find in  macOS Catalina , take a look at our macOS Catalina roundup.

Related Roundup: macOS Catalina

This article, “macOS Catalina’s Biggest Changes: What to Check Out After Upgrading” first appeared on MacRumors.com

Discuss this article in our forums

macOS Catalina, which came out on Monday, is the newest version of the operating system that runs on the Mac. Catalina brings some significant changes, including the removal of the iTunes app, a new Sidecar feature, an updated Find My app, and more.

In our latest YouTube video and in the article below, we're going to go over some must-know  macOS Catalina  features that will be useful to those who have just updated and want to familiarize themselves with the changes.

Subscribe to the MacRumors YouTube channel for more videos.


  • No More iTunes - Apple removed iTunes in  macOS Catalina , splitting it up into three new apps: Music, TV, and Podcasts. These three apps offer all of the functionality that was previously in iTunes, so you can still get to your music library, access TV shows and movies you purchased, and listen to your favorite podcasts. You can still make iTunes Store purchases, too.


  • Finder Syncing - Since there's no iTunes app, you won't use iTunes to manage your devices that are plugged in. Instead, when you plug in an iPhone or iPad to your Mac, you'll see it in the left side of the Finder window where you can get to all the same controls you had in iTunes.


  • Apple Watch Password Authentication - You've long been able to unlock a Mac with an  Apple Watch , but in  macOS Catalina , the  Apple Watch  can also be used to authenticate passwords or approve app installations when you double tap on the Side button. This is especially handy on Macs that don't have Touch ID. Get to the settings by opening up System Preferences and choosing the Security and Privacy section.


  •  Sidecar  -  Sidecar  is a new feature in  macOS Catalina  that lets you use your  iPad  as a secondary display. The easiest way to activate  Sidecar  is to click on the AirPlay icon on the Mac. If you have a Sidecar-compatible  iPad , it will show up in the list of available devices.  Sidecar  is limited to newer Macs and on the  iPad , it only works with iPads that support the Apple Pencil. Make sure to check out our Sidecar guide for more info.


  •  iPad  Apps for Mac - Apple in  macOS Catalina  introduced new "Catalyst" developer tools that are designed to make it easier for developers to port their  iPad  apps to the Mac, which means you can expect some of your favorite iOS apps to be available on the Mac. Catalyst apps are still rolling out, but some high-profile options are already available like GoodNotes 5, Carrot Weather, HabitMinder, and more.


  •  Find My  - There's a new  Find My  app on the Mac, which brings a dedicated app for finding friends and devices for the first time.  Find My  combines  Find My  Mac and  Find My  Friends, so it's the one-stop shop for whatever you're looking for.  Find My  even lets you find your Mac when it's closed and has no WiFi connection by leveraging a Bluetooth connection to other iPhones and Apple devices that are nearby. The new  Find My  capabilities give you a better chance of finding a lost or stolen device.


  • No More 32-Bit Apps -  macOS Catalina  does not support 32-bit apps, which means some older apps might not work after upgrading. This mostly only applies to apps that haven't been updated in a long time, but it's still something that may take users by surprise. For more info, make sure to check out our 32-bit Mac app guide.


Many of the apps on the Mac have been overhauled with new features. Reminders, for example, has a whole new look and an easier to use interface, while Photos has a new view that organizes everything by day, month, or year. Notes lets you share folders for the first time, and there's a Picture by Picture option in Safari.

For a full rundown on all of the features that you'll find in  macOS Catalina , take a look at our macOS Catalina roundup.

Related Roundup: macOS Catalina

This article, "macOS Catalina's Biggest Changes: What to Check Out After Upgrading" first appeared on MacRumors.com

Discuss this article in our forums

Is Your macOS Catalina Install Stuck? Here’s How to Fix It

Apple on Monday released macOS Catalina to the public, allowing everyone to install the newest version of the operating system for the Mac.

Based on reports on the MacRumors forums, Twitter, and other social networks, some people are running into a specific problem – an installation that hangs.

Image via MacRumors reader xodbox

After downloading  macOS Catalina  and installing from the Mac App Store, some people have seen the installation process stop right at the “Setting Up Your Mac…” screen, and even after waiting for hours, it doesn’t resolve.

Luckily, there appears to be a super simple fix for this issue: Just restart. Hold down the power button on your Mac until it turns off, and then power it back on.

Based on reports from MacRumors readers, this fix will send you to the login screen or do your desktop.

After the Mac gets to the “Setting Up Your Mac…” screen, the  macOS Catalina  installation is largely complete. We don’t recommend restarting right away, but if sits at that screen for a half hour or more, shut it down because it’s not going to resolve on its own.

The  macOS Catalina  installation takes some time so don’t restart ahead of when the setup screen pops up, but based on a multitude of reports, resetting in this way if it gets stuck appears to be a safe way of getting your Mac up and running again.

Related Roundup: macOS Catalina

This article, “Is Your macOS Catalina Install Stuck? Here’s How to Fix It” first appeared on MacRumors.com

Discuss this article in our forums

Apple on Monday released macOS Catalina to the public, allowing everyone to install the newest version of the operating system for the Mac.

Based on reports on the MacRumors forums, Twitter, and other social networks, some people are running into a specific problem - an installation that hangs.

Image via MacRumors reader xodbox

After downloading  macOS Catalina  and installing from the Mac App Store, some people have seen the installation process stop right at the "Setting Up Your Mac..." screen, and even after waiting for hours, it doesn't resolve.

Luckily, there appears to be a super simple fix for this issue: Just restart. Hold down the power button on your Mac until it turns off, and then power it back on.

Based on reports from MacRumors readers, this fix will send you to the login screen or do your desktop.

After the Mac gets to the "Setting Up Your Mac..." screen, the  macOS Catalina  installation is largely complete. We don't recommend restarting right away, but if sits at that screen for a half hour or more, shut it down because it's not going to resolve on its own.

The  macOS Catalina  installation takes some time so don't restart ahead of when the setup screen pops up, but based on a multitude of reports, resetting in this way if it gets stuck appears to be a safe way of getting your Mac up and running again.

Related Roundup: macOS Catalina

This article, "Is Your macOS Catalina Install Stuck? Here's How to Fix It" first appeared on MacRumors.com

Discuss this article in our forums