![]() ![]() Now the “ Startup Manager” screen will appear where you can select the USB flash drive or external hard drive used to install the operating system. Restart the device again and this time press and hold the “Option” key (on Intel systems) or do the same with the power key (on M1 systems). Select one of the two system formats “ HFS+” or “ APFS” according to the version in use. Now, in the “ Startup Disk” section, select the installation location of the operating system and then click the “ Erase” option. After the “ macOS Utilities” page appears, click on “ Disk Utility“. Boot the Mac into recovery mode as described in previous sections for products based on Intel processors and Apple M1 chips. First, turn off the device and then connect the memory with an older version of MacOS to it. Now we managed to put the installer on the flash drive and we can downgrade the operating system. Sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled Use the installation tool As a result, the appropriate standard is chosen according to the version of the operating system required for installation. Since the Sierra releases, bootable SSDs have been changed to APFS during installation, and with the release of Mojave, Fusion Drives and HDDs have also been included. It also has experimental support on MacOS because it was considered. “APFS” is Apple’s more modern file system standard, first released in 2017 for iOS devices. Under the “ Format” heading, select either “ +HFS” or “ APFS“. By pressing the combination key “ Cmd + Space” and opening the spotlight, you can find the said program or go to the “ Applications” folder in the Finder and then select the “ Utilities” menu and double-click on the title of the program. To start the process, enter the “Disk Utility” application after connecting the memory to the device. If you have already formatted the memory, you can skip this section and continue with the steps. ![]() The installation tool is downloaded through the “Software Update” section in the “System Preferences” section and will be visible in the “Applications” folder after the complete download.īefore you can create a macOS installation tool on a USB flash drive or external hard drive, you need to format it first. With the update of the App Store from Apple, the mentioned feature was also unavailable But you can still download them through a dedicated page on Apple’s support website. ![]() How to downgrade a Mac with the old version installerīefore the release of MacOS Mojave by Apple, users had the possibility to download older versions of the operating system directly from the App Store. By following the displayed instructions, you will be able to complete the process of reinstalling the operating system from the backup. Next, click on the desired file so that you can see the MacOS version associated with it. Now select the memory address used to store the backup copy in the “ Restore Source” menu. On the next page, select “Continue” again. Of course, note that one of the methods of downgrading the operating system is through old versions of Time Machine in this case, it is better to choose only the necessary personal information so that the downgrading process does not face problems.Īfter displaying the “ macOS Utilities” page, select the “ Restore From Time Machine Backup” option and click the “ Continue” button. Users can make backup copies using the built-in “ Time Machine” function. It is strongly recommended to make a backup copy of the essential data on your device’s internal memory before starting the MacOS downgrade process Because in all the mentioned methods, there will be a possibility of complete deletion of information from the memory of the laptop or computer. For this reason, many developers of said products advise users to avoid updating MacOS (or other operating systems) before the end of the projects. This issue is more visible in audio, video, and graphic hardware facilities and affects related applications. Apple has always tried to release Mac OS updates with backward compatibility But still, in some cases, due to hardware problems and lack of correct compatibility with the software, we see faulty performance after updating the operating system.
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