![]() Reinstalling macOS does not remove data from your Mac. To begin installation, select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.įollow these guidelines during installation: Be sure to use a 'Full Retail' DVD or the drivers for the old Mac may not be included and it will not start up. Allow installation to complete without putting your Mac to sleep or closing its lid.If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.If the installer asks to unlock your disk, enter the password you use to log in to your Mac. OmniDiskSweeper is one free Mac cleaner to find and delete big files that taking up hard drive space and also it can help you recover lost disk space. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.Īfter installation is complete, your Mac might restart to a setup assistant. This is the volume that is erased and becomes the. On the top of the window, you will see what’s taking space on your Mac. WARNING Select the new drive volume in the sidebar then click the Restore button or choose Edit > Restore. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Open System Settings and go to the General section. In Disk Utility, select Macintosh HD (or whatever the name of the drive to erase and clean. Choose your Macs system drive, usually named Macintosh HD, then click. ![]() From the macOS Recovery / Utilities screen, choose Disk Utility from the options. Hold down the Command and R keys as soon as you hear the Mac tone indicating a reboot. Select the Install MacOS Big Sur USB drive as the boot disk. ![]() ![]() Installing a third-party SSD into your Mac may void your warranty, so follow these steps carefully or enlist a professional. Once you’ve backed up your data, you can proceed with your MacBook Pro hard drive replacement. When the new owner starts up the Mac, they can use their own information to complete setup. Apple Silicon Mac: Immediately hold the POWER button until the boot selection screen appears. Remove the hard drive from your MacBook Pro. ![]()
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