
Therefore, you can't go to an older version of macOS at this time on these machines. Macs using Apple Silicon came with macOS Big Sur, the current macOS Big Sur version. If this isn't possible, your Mac will install the most recent version. This should allow you to reinstall the original version of macOS or the closest version still available. On an Intel-based Mac, use the 'Shift' + 'Option' + 'Command' + 'R' keys during startup, rather than 'Command' + 'R'. In Disk Utility, select your hard drive (usually named. At the MacOS Utilities screen, choose Disk Utility. At the boot drive selection, select the macOS High Sierra installer drive. Two examples of when you might want to do this are before selling the machine or when a software title you need doesn't run properly on the current macOS version. With the MacOS High Sierra boot drive connected to the Mac, reboot the computer and hold down the OPTION / ALT key until you see the Startup Manager screen. Instead, you'd like to reinstall the version of macOS that came installed on your computer at the time of purchase. However, there are some situations when this might not be the best option. Ideally, you should reinstall the current version of macOS, and the instructions above will do this. If the installer doesnt see your disk, or it says that it cant install on your computer or volume, you. If the installer asks to unlock your disk, enter the password you use to log in to your Mac. (Image credit: Future) Installing an older version of macOS To begin installation, select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.
