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#MAC DISK UTILITY REPAIR FAILED ALREADY UNMOUNTED HOW TO#
#MAC DISK UTILITY REPAIR FAILED ALREADY UNMOUNTED PORTABLE#
#MAC DISK UTILITY REPAIR FAILED ALREADY UNMOUNTED SOFTWARE#
#MAC DISK UTILITY REPAIR FAILED ALREADY UNMOUNTED PASSWORD#

The High Sierra one still boots fine but when I try to repair the Sierra partition, Disk utility gives me this message: Repairing file system. The operation failed so I restarted, held CMD+R > Disk Utility and tried to First Aid my primary 450 GB partition. The goal was to later enlarge the High Sierra one. I booted as usual on Sierra and tried creating a new partition using Disk Utility by reducing the size of the 450 GB partition in 50 GB. I had this MacOS Sierra partition, 450 GB, and a second partition with MacOS High Sierra, 50 GB. That’s about it with DIY Mac hard disk recovery.My primary MacOS partition got corrupted and I can not repair it or make it bootable. It removes useless files from the drive, monitors your Mac’s performance, and keeps your macOS running smoothly. There are two essentials to a good-working Mac: a clean drive and a fast system.

#MAC DISK UTILITY REPAIR FAILED ALREADY UNMOUNTED SOFTWARE#

With the proper software tools, you can monitor your Mac’s well-being and keep it speedy and sound for years.

#MAC DISK UTILITY REPAIR FAILED ALREADY UNMOUNTED HOW TO#

How to protect a disk from failure and keep Mac healthy Which means you should take it to your local Mac service, they will be happy to assist you at this point.

If you continue having issues with your disk and neither recovery option works, it may be physically damaged. You’ll need to remove all the info from it, reinstall the operating system and restore the data afterward. If that fails, use our guide above to back up your files and then completely reformat the disk. In this case, you can try to repair the disk again. But, unfortunately, there can be other troublesome issues.įor example, Disk Utility may inform you that the underlying task reported failure. If it reports that the disk has been repaired, you’re free to close it all and live a happy life from now on. If Disk Utility offers you to run diagnostics, simply click Run.

Click on the Time Machine status menu at the top right corner of the screenĬan’t see Time Machine among status menus? Then, open System Preferences > Time Machine and select the “Show Time Machine in menu bar” checkbox.Ĭase 2.

If your Time Machine is already configured, you probably know what to do: We recommend connecting your Mac to a power cable before starting the backup. More detailed backup information is specified next to the Select Disk button. That’s it! Your first backup will be started automatically in a couple of minutes.

Choose the storage device you wish to back up your files to and click Use Disk.

Click the Select Backup Disk button in the center of the window.

Go to System Preferences and click on Time Machine.

#MAC DISK UTILITY REPAIR FAILED ALREADY UNMOUNTED PORTABLE#

Connect external storage (AirPort Time Capsule, USB flash drive, portable hard drive, or else).

If you’ve never used Time Machine, you’ll need to configure it first: This means you need to promptly back up all your files and take your beloved Mac to the repair shop. Disk Utility might tell you right away that your current startup disk is on the very edge of failing.

#MAC DISK UTILITY REPAIR FAILED ALREADY UNMOUNTED PASSWORD#

Then, enter your Mac account password in the dialog that appears.Ĭase 1. To do it, click Mount at the top of the Disk Utility window. Note, that if you are using FileVault to encrypt your disk, you must mount the disk first.

In the sidebar, choose the disk you think needs repair.

Select Disk Utility and click Continue.

When your Mac restarts, press Command + R and hold the keys until the Apple logo appears.

Click on the Apple menu (top left corner), choose Restart.

You’ll lose access to it after you restart your Mac later.

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If it fails, the only alternative is backing up your data and getting a new disk. That’s only possible if your disk can be saved by means of Mac’s native app, Disk Utility. We’ll go over how to perform hard disk repair on Mac using software solutions.