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#MAC OS DISK UTILITY ON BOOT HOW TO#
#MAC OS DISK UTILITY ON BOOT MAC OS X#
#MAC OS DISK UTILITY ON BOOT MAC OS#

If you used Disk Utility from macOS Recovery, you can now restart your Mac: choose Apple menu  > Restart. The order of repair in this example was Macintosh HD - Data, then Macintosh HD, then Container disk4, then APPLE SSD. Keep moving up the list, running First Aid for each volume on the disk, then each container on the disk, then finally the disk itself.

#MAC OS DISK UTILITY ON BOOT MAC OS#

Authenticate with an admin user account, and at the macOS Utilities screen, pull down the. simillary to the someone else problem described here: Unable to boot Mac OS and disk utility unable to repair disk after bootcamp delete windows partition The laptop is: MacBook Pro 15 i9 2019 Las. Turn on or reboot the the Mac and immediately hold down COMMAND + R keys once you see the Apple logo on screen, continue to hold Command+R until the Mac boots into MacOS Recovery mode.

#MAC OS DISK UTILITY ON BOOT HOW TO#

It’s a bit like the Disk Management tool built into Windows, but more capable and, thanks to Recovery Mode, easier to access from outside the operating system. How to Enable & Allow External Drive Booting on Mac with T2 Chip. It should give you some diagnosis to confirm whether your drive is viable, or needs to be repaired.

Once youve loaded Disk Utility, select Verify Disk and allow your Mac to check the disk.

#MAC OS DISK UTILITY ON BOOT MAC OS X#

Accessing the Disk Utility via Recovery Menu After the Disk Utility is fully loaded, select the volume entry that holds your OS files and click on the First Aid tab (from the toolbar) and wait for the Done button to activate. The Disk Utility included with Mac OS X is powerful, and it should handle all the functions you need it to perform. You can locate Disk Utility within your Applications -> Utilities folder, or by searching 'Disk Utility' in Spotlight.

If you're asked for a password to unlock the disk, enter your administrator password.Īfter Disk Utility is done checking the volume, select the next item above it in the sidebar, then run First Aid again. Once you see that menu, click on Disk Utility to select it, then press the Continue button to open it.

If the button is dimmed and you can't click it, skip this step for the disk, container, or volume you selected.

If there is no Run button, click the Repair Disk button instead.

In this example, the last volume on the disk is Macintosh HD - Data.Ĭlick Run to begin checking the selected volume for errors. Select Disk Utility to repair or erase a disk. Youll see a macOS Utilities or Mac OS X Utilities window, which depends on your Mac operating system. You can release these keys when you see the Apple logo. For each disk that you're repairing, start by selecting the last volume on that disk, then click the First Aid button or tab. Restart the Mac and instantly hold Command + R keys to boot Mac into macOS Recovery mode.