How do I force my Mac to unmount disk?

For that using the terminal application again, enter the following command: sudo diskutil unmount force /dev/(enter here disk identifier name) Then press return and enter the admin password if prompted. This will definetely unmount the entire disk and all its related volume.

What does unmount mean in Disk Utility?

(1) To disconnect a disk drive or optical disc from a computer. When a user selects “eject” to evacuate an optical disc from the computer, the operating system unmounts the medium. (2) To remove a disk or tape cartridge from the drive.

How do you unlock a disk in Terminal Mac?

1. Unlock hard drive on Mac with Terminal

1. Start the process by launching the Terminal app on your Mac.
2. Then, type “diskutil apfs list” and hit return.
3. Next, type “diskutil apfs unlockVoutillume /dev/apfs_volume_id -passphrase type_the_key”, then hit “Return”.

How do you force unmount?

You can use umount -f -l /mnt/myfolder , and that will fix the problem.

1. -f – Force unmount (in case of an unreachable NFS system). (Requires kernel 2.1.
2. -l – Lazy unmount. Detach the filesystem from the filesystem hierarchy now, and cleanup all references to the filesystem as soon as it is not busy anymore.

What does mounting a disk mean Mac?

Mounting an external disk intends to make the storage device available for macOS to perform read and write operations on it. Usually, disk mounting is an automatic process and happens when the external hard drive gets connected to Mac via one of the USB ports.

How do I unlock Disk Utility on Mac?

To unlock and access the startup disk’s FileVault-encrypted data:

1. On the client Mac, start up from macOS Recovery by holding Command-R during startup.
2. Select “Disk Utility” and click “Continue”.
3. Select startup disk in left-hand sidebar and click “Mount”.
4. Enter recovery key in password field and click “Unlock”.

How do you unlock a Mac hard drive in recovery mode?

1. Recovery HD is Locked. Recovery HD can get locked sometimes which is indicated by the appearance of an error message that says, “Hard Drive locked”. To get rid of this problem, simply go to disk utility, click on the hard drive then click ‘enable journaling’ to unlock the drive.

What do I do when I get error couldnt unmount disk on Mac?

Here are the steps you need to follow to resolve this error using a USB boot drive: Connect the USB boot drive to your Mac, then reboot. While restarting, hold down the Option key button and choose the attached boot drive. In the boot menu, choose Disk Utility. Click First Aid at the top menu to verify the disk.

Why is my Disk Utility not working on my Mac?

However, sometimes you may receive the error message “Disk Utility stopped repairing ‘Macintosh HD’/disk1s2/External HDD, etc. Disk Utility can’t repair this disk”. Usually, this problem may not only happen on Macintosh HD but also on an external hard drive in Mac Mavericks, Yosemite, EI Capitan, or Sierra.

Is there a way to fix a disk error on a Mac?

Verification and repairing the disk is done with the “First Aid.” This will not work with the disk that is throwing the error is the same as the primary boot partition. The solution lies only in using a separate USB drive for fixing the error. External USB Drive not Mounting on Mac?

How to get to Disk Utility on Mac?

1 Attach the USB boot drive to the Mac and reboot 2 Hold down the OPTION key during boot, then select the attached boot drive (typically has an orange icon at the boot menu) 3 At the boot menu, choose “Disk Utility” (if using an Installer disk, pull down the “Utilities” menu to access Disk Utility)