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What causes this particular error and what can I do to mount this drive or retrieve the data from it?
iMac Line (2012 and Later)
I ran into this issue with a Western Digital 2TB drive... I had seen some irreperable disk errors and was ironically, attempting to back the drive up so I could reformat it... so, I was panicking because I've got some important data on the drive and was starting to research data recovery tools. After messing around and doing some research, I discovered the system was trying to run a filesystem check on it and was getting hung up.
I opened a terminal window and entered the following commands
$ ps -ef | grep fsck
$ sudo kill [pid from above]
BAM! Disk mounted just like that.
At this point, I opened Disk Utility and ran First Aid... which ironically unmounted the drive and then got hung up again... DUH! So had to repeat the process. At this point, with the drive mounted, I backed up the drive and reformatted it.
Hope this helps.
BTW. I used Alsoft DiskWarrior. Never tried the app called, "Disk Warrior" (two words).
Earlier someone mentioned that DiskWarrior was cheap. Just wanted to clarify, i used the Alsoft version. Next time I'll try ph290's solution.
this is the answer
thanks..
Seems mine was a operating system issue (10.15.3)
I connected the HD to a MacBook Pro running Yosemite 10.10.5 and it successfully showed up
Open Activity monitor and forse quit there fsck_ext. Will solve issuer.
Fixed: Open Activity Monitor > Run System Diagnostics
Force quitting fsck_ext from the Activity monitor fixed the problem. Thanks for the tip mdfilmstudio.
I get a .tar.gz file when I run diagnostics. No drive mounts for me.
What worked for me was relaunching the finder (Click Apple top left -> Force Quit... -> Finder -> Click Relaunch)
After that, the drive was automatically mounted. Hope this helps someone!
Didn't work for me.
Catalina is the WORST Apple OS ever conceived. I'm having the same problem and after spending hundreds of dollars (I have a recording studio) because of Catalina. Screw APPLE.
Vietre 55 that's exactly what happened to me after I made my post. It was like a miracle. Thanks for commenting, guys.
Oh I definitely agree it’s ridiculous but it was all I could do that actually worked. Apple needs to rectify it.
I had the same problem with a Seagate 6Tb drive - partitioning worked for me too. Cheers!
An external disk refuses to mount, com.apple.DiskManagement.disenter error -119930868.
