- #Mac os x lion reinstall install#
- #Mac os x lion reinstall update#
- #Mac os x lion reinstall software#
#Mac os x lion reinstall install#
You can format the drive and then go back to the Recovery menu and install macOS Monterey. If you want to erase your disk first, to do a clean install, quit the installer and run Disk Utility from the Recovery menu. After selecting it, your system will boot off your USB drive and enter macOS Recovery with the macOS Monterey installer appearing on your screen. You should now see an option to select your USB drive as a startup disk. To boot an M1 or M2 Apple silicon Mac using a bootable USB disk, power on the system or restart it if it’s already on, and keep the Power button pressed down. Power on the system, or restart it if it’s already on, and immediately press and hold the Option key when it starts booting. Simply plug your created USB drive into an open USB port on your Mac. There are two different methods to boot your Mac from a bootable USB, depending on which processor your Mac has. Learn more about using macOS Recovery to reinstall.
#Mac os x lion reinstall software#
When you see the utilities window in macOS Recovery, select Reinstall macOS, then click Continue and follow the onscreen instructions. Creating a bootable USB drive and using it to reinstall macOS is a bit of a lengthier process compared to simply updating macOS from the Software Update.
You can use Time Machine to easily back up the data on your Mac. If youre asked to select a user you know the password for, select the user, click Next, then enter their administrator password. I have an official Apple Lion USB Recover Drive and thought I'd use that to install Lion on computers that had a hard drive. This almost always results in a Mac running faster after a clean install, since macOS has started over with a clean slate.īefore you reinstall macOS on your Mac, make sure you’ve backed up all your important data! This is crucial when you do a fresh installation, as it will wipe your hard drive. 1 I support many many Apple computers in a higher ed institution. A clean installation allows you to get rid of junk apps and files that may have accumulated over time. These issues include when your Mac refuses to boot or when you need to recover system files that seem to be lost.Īnother benefit of using a bootable disk for a macOS installation is that you can perform a clean installation. You can also use the built-in recovery tools that come with the macOS installer to troubleshoot and fix different kinds of issues. 1 You can purchase Lion at Apple on a DVD: I guess that is the only legal way to install Lion on a clean Mac. This can save quite a bit of time, considering the most recent versions of macOS have an installer size of 12GB.
If you're using a Mac with Apple silicon Press and hold the power button on your Mac. Your Mac will need to connect to the internet.
#Mac os x lion reinstall update#
Why Would You Need to Install macOS From a USB?Ĭreating a bootable USB drive and using it to reinstall macOS is a bit of a lengthier process compared to simply updating macOS from the Software Update section of the System Preferences, but it has its benefits.īut creating a bootable USB disk allows you to install or update macOS on multiple systems without having to download the installer on each Mac. Start up from macOS Recovery If you're not sure whether you're using a Mac with Apple silicon instead of an older Intel-based Mac, you can try the steps for both.
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