As you’re going to completely clean install macOS Monterey, your computer’s drive and all of the files stored on it will be completely wiped and replaced by the new operating system. As you can imagine, that means that before attempting to use your USB installer that you’ll want to en...
Find the version of macOS that you want to install, and then click its accompanying ‘Install’ button. This will download the installer to your Mac’s ‘Applications’ folder. Once you have the necessary installer, it’s time to transform your USB drive into a bootable installer. Note that...
Here’s how to instal your new macOS on the non-startup disk. 1. Erase your non-startup disk drive Before you install the new OS on it, you need to erase all data on the drive you’ve chosen for it. To completely remove data with Disk Utility choose the volume you’d like to ...
Then, boot into macOS Recovery mode again, erase the startup disk (Usually Macintosh HD) in Disk Utility, and go back to the macOS Utilities window to reinstall macOS with the Reinstall macOS utility. How to Completely Factory Reset MacBook Pro/Air? Step by Step Is your Mac not working ...
Reinstall macOS How I can reinstall macOS high Sierra by internet 4 years ago 245 1 can I reinstall only Mac OS high Sierra from time machine after the Mac HD has been completely erased/ can I reinstall only Mac OS high Sierra from time machine after the Mac HD has been completely er...
If you have already erased or corrupted the Mac, you will be stuck trying to do this from Internet Recovery. That may require you reinstall Sequoia, then download the desired OS and make a USB Installer from that. Erase the drive completely, Reinstall macOS, then Migrate from the Time Machi...
How to Enter macOS Recovery Follow these steps to start up your computer in macOS Recovery. Shut down your Mac if it's already on by clicking the Apple symbol in the menu bar and selecting Shut Down. When your Mac has shut down completely, press and hold the power button until "Loading...
If your Mac is unresponsive, you may need to do a manual restart. To manually restart your Mac, press and hold down the power button on your Mac until you see the screen go black. Allow a minute for everything to completely close down, then press the power button again to power up ...
If you want to install Monterey to a non-Apple SSD, you need to reinstall the original SSD, install macOS 12 on it to get the EFI update, then switch back to the non-Apple SSD. However, if you are using an Apple SSD, to resolve these Catalina to Monterey upgrade issues, you are ...
Go to the App Store on your Mac and look for Catalina or macOS 10.15 from here. Once the dedicated profile for macOS Catalina would be opened, click on the "Get" button to save the macOS Catalina installer. When the installer is downloaded completely, quit the application from the menu ba...