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It works well when troubleshooting problems with your Mac, especially if you can’t boot from the primary hard drive to access System Preferences.If you've added a second drive to your computer when you originally ordered it, then it came pre-formatted and ready for use no additional setup is required. This is an easy way to select a startup disk before your Mac turns on. Your Mac will boot from the startup disk you selected.
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Here’s how to change your Mac’s startup disk:Ĭonnect the drive you want to use as a startup disk to your computer.įrom the Apple menu, select System Preferences. Changing Your Mac’s Startup Disk with System Preferences Normally, the startup disk is set as the hard disk inside of your Mac, but you can use an external hard drive, USB thumb drive, or DVD as your startup disk. When your Mac turns on, it loads the operating system on the designated startup disk, a hard disk or partition containing the macOS operating system. AirPort Apple Apps Backups Developer Education Email Hardware Internet iPad iPhone Mac Music Network Photos Security TV Weekend Wonk
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