Have you decided that you no longer want to run the beta version of MacOS Catalina 10.15? You can return from MacOS Catalina by downgrading. The easiest way to switch from a beta version of MacOS Catalina to a previous stable build of MacOS, such as MacOS Mojave, High Sierra, Sierra, El Capitan, etc., is to format the computer and then restore it from a backup of Time Machine created before installation MacOS. Catalina beta. This is the easiest way to return a beta version of MacOS Catalina to a previous version of MacOS.
To use the downgrade method of the beta version of MacOS Catalina, which we are discussing here, you will need to backup Time Machine before installing the beta version of MacOS Catalina, since you will be restoring this Time Machine backup. The process is quite simple, basically you will format and erase the MacOS Catalina drive, and then restore your Mac using a backup copy of Time Machine, made before installing MacOS Catalina.
A warning: This process will erase all data on the target Mac hard drive, and will not continue without adequate backup of your data. Failure to create adequate backup copies of your data will result in irreversible data loss as a result of erasing and formatting the disk. You can also manually save or save any important files or data created in macOS Catalina, since this data will not be restored from the previous Time Machine backup.
Before you begin, it would be nice to confirm that you have a backup copy of Time Machine, which was made from a previous MacOS installation (i.e., made from a MacOS release before installing MacOS Catalina beta), because this is where you will restore the Mac. If you do not have a Time Machine backup from a previous MacOS installation, do not use this method.
If you do not have a backup copy of Time Machine, which was made before installing MacOS Catalina, this approach to downgrade will not work. Instead, you will probably need to format the disk and perform a clean installation. You can try to reinstall only the system software using Internet Recovery, but earlier reports indicate that this does not work to downgrade Catalina 10.15.
How to downgrade version with macOS Catalina 10.15 Beta
Again, If you do not have a backup copy of Time Machine created before installing macOS Catalina, do not use this approach.The slide method described here depends on these Time Machine backups.
Connect the Time Machine disk to your Mac, it should be a Time Machine backup disk that contains a previous MacOS backup, since this is what you will restore from
Immediately after the restart, hold down Command + R Keys for Mac boot in recovery mode
On the MacOS Utilities screen, select Disk Utility.
In Disk Utility, select the disk with MacOS Catalina beta installed on it, and then click the “Erase” button.
Name the erasable disk you want to delete, then select the file system format: “Apple File System (APFS)” (for most MacOS Mac OS Mojave) or “Mac OS Extended Journaled (HFS +)” (for most Sierra computers or older Mac). releases)
When you are satisfied with the configuration of the disk and file system, click "Erase" to format the Mac. IT REMOVES ALL DATA ON DRIVEMake sure you have a backup of your data before proceeding!
After erasing and formatting the disk, exit Disk Utility.
Back on the MacOS Utilities screen, now select “Restore from Time Machine backup”
Select the connected Time Machine drive as the backup source and click Continue.
On the Time Backup Selection screen of Time Machine, select the most recent backup from the MacOS version you want to return to when switching from Catalina (MacOS Mojave 10.14, High Sierra 10.13, Sierra 10.12, El Capitan 10) , 11, etc.) and select Continue again
Now select the name of the target disk to which you want to restore the backup backup of Time Machine MacOS, it must be the same disk that was formatted in step 7, then click “Restore” to start restoring the backup Time Machine to the selected disk.
The Time Machine recovery process may take some time, depending on the speed of the disks and the speed of the Mac, let it finish, as this is what you use to upgrade from MacOS Catalina to the MacOS version you choose from Time Machine. list of backups.
After the backup has been restored on a Mac, the Mac will automatically restart and boot directly into the MacOS version that was launched when the selected backup Time Machine was made. For example, if the Time Machine backup was from MacOS Mojave, then MacOS Mojave would be what MacOS Catalina dropped.
The approach described here works regardless of how MacOS Catalina was installed, whether from a downloaded installer, from a Catalina installation USB disk or otherwise, the installation method does not matter, it’s only important that you have a backup copy of Time Machine to restore of.
Other options include an online recovery attempt that installs the Mac OS version shipped on a Mac and a clean install of the previous MacOS version. Any of these approaches will still depend on having a backup of the data to avoid losing your files, data, photos, applications, and other personal items.
If you know a different approach to downgrading the MacOS Catalina beta version, or if you have any tips, tricks or experience in the independent work, share your experience with downgrading Catalina in the comments below!