

Step 1: At first, attach USB boot drive to your drive

Procedure 3: To fix couldn’t Unmount Disk error Mac, you can check USB Boot Drive Or go to Erase if you want to format the disk. Step 4: Finally, go to First Aid if you want to verify and repair the disk. Step 3: Choose Disk Utility in appeared boot menu Step 2: Now, choose Recovery Partition option from the appeared menu Step 1: At first, restart your Mac and press & hold option key Step 6: Follow the steps if you want to unmount further the disk on your Mac Procedure 2: You can use Recovery Partition Step 5: After that, replace /dev/diskx with the correct disk number Step 4: Now, type sudo diskutil unmountDisk force /dev/diskx command in command line Step 3: Once list of all disks appears, you need to found the disk that you want to unmount Step 1: At first, access Terminal application
Mac os disk utility cannot unmount disk how to#
You may also read: How to Fix Error 0xc000009a B1 Initialize Library Failed Issue On Windows PCs Ways to Fix Couldn’t Unmount Disk Mac: Tips & Tricks Procedure 1: fix couldn’t Unmount Disk error by using command line Let’s take have a look at solution to fix this issue. In case you have this issue on your PC, you might face several issues including sudden elimination of the running application, lost or corrupted files on hard drive, unable to open particular files or programs and unable to partition Mac HFS as well.
Mac os disk utility cannot unmount disk driver#
The alert message might popup on your Mac when the driver is being used by other apps or process.Īs we know that, Disk Utility is important feature that helps to solve any problems related to disk or storage on your System.

