couldn't unmount disk -69888 | macOS

[@jaouadiahmed8253]

I tried but i got this msg : forced unmount of disk0 failed: atleast one volume could not be unmounted

[@moebiuse9032]

hi i have the same problem, did you fix it already? how

[@OREMETOSMusic]

I have the same problem. Nobody seems to know or care how to fix it.

[@meryamsouak776]

​@OREMETOSMusic got the same problem. How to fix it?

[@ssk6615]

Force Unmount failed reason " atleast one volume could not be unmounted. Unmount was dissented by PID 0"

[@simmylyn8390]

i got this too

[@jebaranit4474]

Same here

[@Hoooow.2]

same @@jebaranit4474

[@dharmikmoradiya6691]

Same

[@abhijeet21251804]

Also the same how can fixed these issue

[@Medoritchie]

For the people who are still having the same error or couldn't proceed, if you are using an adapter for the SD card, try changing that and try again

[@shikhab2250]

I have the exact opposite problem. I am trying to reinstall high sierra on mid 2012 macbookpro to fix a corrupted os since last year february without much luck. Today I went to internet recovery mode and using disk utility formatted the internal hard drive to apfs (as suggested by apple website) but high sierra could not be installed with the error "recovery server cannot be contacted". Looking at the logs i saw the reason being it does not like apfs format. I again used the disk utility to format the hard drive back to extended journaled but the operation failed (it unmounted the hard drive and was stuck at preparing to activate partition and then the operation finally failed ) and the hard drive ever since is in an unmounted state. Is there a way to mount it again and format it to extended journaled from the terminal in internet recovery mode? Please help me i dont have another laptop.

[@CarreJordan]

I am still getting error 69888 when I try to unmount this external disk

[@johnprosser2142]

same!

[@Qtonalli]

I had the same problem and followed the steps, although in the end I had to erase the disk from the terminal. It has been a whole day and it is still in the erasing process. Will it take longer? Or is there a possibility that it has frozen?

[@andipstha]

It took me 10 mins to erase the disk. It is possible that the wiping procedure is taking longer than expected, especially if the disk is huge. If the erasing operation is still in progress, executing the "diskutil list" command in the Terminal on a regular basis may be useful. This command displays a list of all disks connected to your Mac, along with their size and status. You may check the status of the disk being erased to see how far it is along.

[@hienle-kc6qw]

unfortunately, i have a SDD and it failed even when used this method

[@albertovalverde3336]

This really helped me !! Thank you sm 🙏🏼

[@matthewarendse1913]

Much appreciated, clear and simple instructions, solved my issue, thanks mate :)

[@andipstha]

Great to hear!

[@dharmikmoradiya6691]

Still getting error Forced unmount of disk0 failed at least one volume could not be unmounted unmount was dissented by PID 0(Keranl task )

[@andipstha]

do you have Identify the disk or volume you want to unmount, and take note of its identifier (e.g., disk0). 0:42 After identifying the disk, run the following command to unmount the disk or volume (replace diskXsY with the actual identifier): sudo diskutil unmount force /dev/diskXsY

[@andipstha]

0:06 Device: disk0

[@dharmikmoradiya6691]

Thanks for the replay I am uploading a problem video if you have a time please can you guide me into this. @@andipstha

[@dharmikmoradiya6691]

Problem is automatically solved if you found this error dont do anything system will manage it self automatically

[@johnprosser2142]

@@andipstha I did that and it still will not unmount!

[@Luthfifatah]

Very helpful many thanks🙏🙏👍

[@andipstha]

Most welcome 😊

[@davidthegm6027]

Please help me,it said it couldn't open device ;-;

[@mrpapitafrita]

Forcé unmount of disk0 failed

[@CelebrityLyrics]

Same here! Have you found a fix?

[@andipstha]

0:06 diskutil unmountDisk force /dev/diskx ( x - corresponds to the number of its volume)

[@andipstha]

sudo diskutil unmountDisk force /dev/disk0

[@dharmikmoradiya6691]

Sudo not round

[@ricardobonilla4975]

Muchas gracias. Funciono perfecto

[@nurahmadsabil6315]

Thank you very helpful

[@luiszorrilla7465]

Thank you it work 🙂

[@andipstha]

You're welcome!

[@reviewtop7673]

Turn off SIP

[@jailbreak7750]

waiting for partitions to activate

[@iried]

Thanks< it works