How do I force unmount Macintosh HD?

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.

Why can’t I erase my Macintosh HD in disk Utility?

It’s not usually possible to erase the startup disk because your Mac is using it to run macOS. Recovery Mode is a special partition on your Mac you can use to restore from a backup, reinstall macOS, get online support, or erase your startup disk. You should back up your Mac before trying to erase or reformat it.

How do you fix Macintosh HD not mounted?

How to fix Macintosh HD not mounted in Disk Utility?

1. Boot your Mac into macOS Recovery Mode.
2. Select Disk Utility from the macOS Utilities menu and click Continue.
3. Select the unmounted Macintosh HD from the left-hand panel.
4. Click First Aid on the top of the window and wait while it verifying and repairing errors.

What does unmount Macintosh HD mean?

Unmounting a disk makes it inaccessible by the computer. In Mac OS X, select the disk on the desktop and either drag the disk to the trash (which changes to an Eject icon), or select “File→Eject” from the Finder’s menu bar. Once a removable disk has been unmounted, it can safely be disconnected from the computer.

How do I unmount a disk drive?

Within Settings, tap the Storage button. Scroll down the Storage screen, and near the bottom, you’ll find what we’re looking for. Tap the Unmount SD Card button. And then tap OK to confirm in the pop-up that appears.

Can I delete Macintosh HD data?

The answer is you need to back up your Mac first, then open Disk Utility in macOS Recovery mode. Next, delete Macintosh HD* – Data the user volume, using the – volume icon present on the top panel of Disk Utility. Later, select Macintosh HD the system volume, and click the Erase tab to erase the volume.

How do I reinstall Macintosh HD?

How to Reinstall Mac OS Using Recovery Mode

1. Restart your Mac.
2. As your computer is restarting, hold down the Command + R keys.
3. When you are in recovery mode, click Reinstall macOS and then click continue.
4. When the installer window pops up, click Continue.

How do I access Macintosh HD from terminal?

When you open Terminal , you start out in /Users/username/ , or, in short, ~ . This is the same path as Macintosh HD:Users:username. cd .. from there brings you to the parent directory /Users , or Macintosh HD:Users. Your other disks are mounted in /Volumes/ (which is not visible from the Finder).

How do you unlock a hard drive?

How to Unlock a Hard Drive

1. Step 1: Run a disk check. Install the boot disk or USB drive, and power the computer on.
2. Step 2: Run a system file check. Boot the computer from the disk or USB as you did in step one.
3. Step 3: Complete a startup repair.
4. Step 4: Try a system restore.
5. Step 5: Refresh your PC.