How to Update Startup Disk on Mac?

Change your Mac Startup Disk

On your Mac, choose Apple menu > System Preferences, then click Startup Disk . Open Startup Disk preferences for me. If the lock at the bottom left is locked , click it to unlock the preference pane.
Click the icon of the disk you want to use, then click Restart.

How to Select a Startup Disk on your Mac

Start or restart your Mac and immediately press and hold the option key option key The Option key is a modifier key present on Apple keyboards. It is located between the Control key and Command key on a typical Mac keyboard. There are two Option keys on modern as of 2020 Mac desktop and notebook keyboards, one on each side of the space bar. https://en.wikipedia.org › wiki › Option_key Option key Wikipedia on your keyboard. Release the option key when you see the Startup Manager window. Select a startup disk. Click the arrow or press Return on your keyboard.

Why Can't I Find Startup Disk on my Mac?

If you cant see your startup drive, open Disk Utility from the macOS Utilities window. Click on your startup drive and click the First Aid tab. Click Run. If the repair fails or you cant see your startup disk in Disk Utilities, youll need to erase the disk and reinstall macOS.

How do I Restore my Mac from Startup Disk?

Restart your Mac, and press Command + R, while its restarting. Select Disk Utility from the macOS Utilities menu. Once Disk Utility has loaded, choose the disk you wish to repair the default name for your system partition is generally "Macintosh HD", and choose Repair Disk .