Force unmount disk mac terminal You can use it from the Normal Mode if you want to unmount any external drive. Type: diskutil list; Press Return. For instance, if you need to mount the EFI partition o n Mac, use: diskutil mount disk0s1. Following this, attempt to Erase/Partition the drive again in Disk Utility. 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. Insert your startup DVD into your reader. Type the command diskutil list to get the disk identifier. Go to Applications > Utilities and open Terminal, or choose it from the Utilities menu in macOS Utilities in recovery mode. Mar 20, 2025 · If still the above method didn't work, then the last option is to force the entire disk to unmount. Open Terminal from the Recovery Mode if you need to unmount the drive you are currently booted from. Unmount a Disk Using Terminal. Aug 5, 2022 · If you force eject it, either with software or by unplugging the disk from your Mac, you could damage its data. May 13, 2013 · Tried disk repair, tried First Aid. So I tried terminal commands like: diskutil list which yelds this: I also tried: mount force /dev/disk3 and got: Sep 19, 2019 · Script uses diskutil list external to get all external disks then loops over the output to unmount them. Luckily, there’s a simple solution, so long as you’re OK using Terminal. To re-mount it, I would type: diskutil mount disk1s10 (note the identifier column identifies Boot_Tiger as disk1s10) $ sudo diskutil eraseDisk JHFS+ DISK_VOLUME disk1 Started erase on disk1 Unmounting disk Error: -69888: Couldn't unmount disk But it didn't work as well. After that, try to partition or eliminate the external disk once more. Caution must be used with this approach however because forcibly unmounting a disk can cause data loss of the drive being forcibly unmounted. Nov 9, 2017 · About a month later I wanted to use the drive and it would not mount. To unmount a partition on macOS: diskutil unmount diskXsX You can force unmount a drive by running the following Terminal command: diskutil unmountDisk force /Volumes/VOLUMENAME Replace VOLUMENAME with the name of a volume on the disk you are trying to unmount. Replace “diskX” with the exact identifier of the disk. I could see it in Disk Utility (on both OS’s). Force Unmount Disk with Terminal. Run disk utility from your startup DVD. Note the Dec 3, 2024 · These commands apply to both internal and external disks. If previous steps didn’t work, you can use Terminal to fix “can’t unmount disk” on Mac. (thanks to @nohillside for the tweaks) Jan 22, 2025 · C. It would say all good, but the drive would NOT mount. When I connect the drive I get this: The disk you inserted was not readable by this computer. Disk Utility reports that it is "Not Mounted". Nov 3, 2021 · You still won’t be able to unmount a volume that you have booted from, but you can use it to unmount an external disk or from кecovery mode to unmount your main boot disk. To unmount a disk in Terminal: Aug 11, 2024 · “Couldn’t unmount disk 69888 mac os” “couldn’t unmount disk 69888 external drive” “couldn’t unmount disk when trying to erase mac” “couldn’t unmount disk 69888 usb” “Force unmount disk Mac Terminal” “couldn’t unmount disk time machine “ “Couldn’t unmount disk when trying to erase mac fix” “can’t . " Force unmount disk on Mac with Terminal. Can't unmount the disk on Mac? If so, you may force an unmounted disk in the Mac Terminal. , it also enables you to mount and unmount a disk set or a member disk, here's how: Nov 9, 2005 · To unmount JUST the "Boot_Tiger" volume, I would type: diskutil unmount /Volumes/Boot_Tiger or diskutil unmount disk1s10 and the Boot_Tiger partition would disappear off my desktop. zshrc so I now only have to type eject in Terminal to eject all external disks attached to my Mac. If you still can't unmount the disk on Mac, you can force unmount the drive in Dec 3, 2024 · With the macOS built-in disk management tool - Disk Utility, you can add/delete APFS volume, partition the drive, First Aid the disk, etc. If you have any idea to get the HDD working or even safe the files, I would be really grateful. Another method uses the command line to force unmount a disk, but this is not the top recommended option because of potential for data loss. Press Enter to force unmount the drive on your Mac. Power down your mac Jul 18, 2012 · Then using terminal, used the following commands to force unmount disk and erase the disk after. Just replace DISK_NAME with the name of the volume you want to eject, press enter, and you’re done! Mar 7, 2025 · Fix 3. To forcefully remove the drive, enter the command diskutil unmount Disk force /dev/disk, and press "Enter". Even tried terminal, and force mount on terminal and it’d give me the whole try Read Only mount –also didn’t work. Also read: How to (Force) Mount External Hard Drive on Mac? (Terminal) To unmount a disk on macOS: diskutil unmountDisk diskX. Related: 10 Tips to Fix External Hard Drive Not Mounting on Mac. Jun 14, 2013 · How to Forcibly Unmount a Disk by Command Line in Mac OS. This will definetely unmount the entire Mar 25, 2010 · Boot up from your Leopard & install. 6 days ago · To remove the drive from Time Machine on macOS Monterey, open System Preferences > Time Machine, then right-clicking the Time Machine disk that provokes "couldn't unmount disk" and select "stop using (drive name) for Backup. diskutil verifyVolume/diskutil repairVolume These are the steps to follow to force unmount the disk with Terminal: From the Applications, open the "Terminal > Utilities" folder. I then created an alias in ~/. You should re-partition or re-format the hd. To check for the exact name of the disk: sudo diskutil list (you will see the list of drives/partitions, take note of which one is the one you are trying to unmount/format, should be something like /dev/disk<number>) Then to force unmount disk: sudo Jul 13, 2012 · For those of you that prefer using Terminal, or would rather eject the drive with a single command, simply open Terminal, and type the following: diskutil unmountDisk force /Volumes/DISK_NAME. These are the steps to follow to force unmount the disk with Terminal: Step 1. From the Applications, open the "Terminal > Utilities" folder Sep 21, 2023 · If you can’t eject an external hard drive from your Mac, you can type sudo diskutil unmount force /dev/diskX. rcgsc iihefmg echfx zqljpbvd yhahba ifvnv gzti txucb ibodsd vsmzyw ejj jfl teeyxir chath ajjysj