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.
Hi. I did what SAL0808 suggested and after installing Windows NTFS Tuxera and once the system was restarted, the external disk returned to life and performed a time machine data backup with no problem.
Hola. A mí me sucedía lo mismo y lo que hice, siguiendo los consejos de un compañero de este fórum fue instalar la app TUXERA.
Tras dicha instalación, y después de reiniciar el equipo, el disco externo montó sin problemas.
Alsoft DiskWarrior. Expensive, but it worked for me. Used the mount button. Then rebuilt the drive's directory with no data loss. I can't guarantee anyone else's results. I don't work for Alsoft. Just saying, it worked for me.
I think i have stumbled upon a solution. It's not ideal, but this is what i found to work consistantly.
thats. it!
If that doesn't work, try to shutdown and then start again. But for me just logging out and logging back in seems to have done the trick.
It's super annoying to do every-time i need to connect a device. but for now it seems to have worked.
There may be some process running in the background that hinders the MacBook to mount the disk, for me it was NTFS for Mac application so go through the Activity Monitor and quit unnecessary applications.
I almost cried when this just happen to me on Sandisk 1TB SSD (only a week old).
Fortunately I have manage to Mount the disk again without losing any data.
Open Activity Monitor > highlight Disk and search for fsck > Double click fsck > click Quit > choose Force Quit, the external drive immediately appeared on the desktop with full access to all files 😮💨
I eject the disk correctly each time yet have found I need to complete this action to access the disk each time I connect it.
So I tried everything, absolutely EVERYTHING and currently I have Catalina, tried to update to Big Sur but since I have a MacBook Air I don't have a lot of space for that. What worked for me was going to Launch Pad - Open Activity Monitor - and then Force Quit fsck_ext. After that my external hard drive magically appeared on my screen again! I was this close "." to buy a new hard drive.
I've had this issue with 2 separate hard drives and I got both to work!! It really is Catalina or what ever OS software you're using most likely. I always find a solution and forget to post it. Ultimately it comes down to just leaving your ex-drive plugged in for extended period of time and it should show follow steps below!
Step 1. Open Finder
Step 2. Go To Applications
Step 3. Go to Utilities
Step 4. Go to Disk Utility
Step 5. Your drive should appeared greyed out on the left hand side under "External"
Step 6. Click on the drive you'd like to mount
Step 7. Click on Mount (should be next to restore at the top under "Disk Utility"
Step 8. You should get an error message click ok
Step 9. Click on mount again you'll continue you to get the error message so rinse and repeat
Step 10. After 3 or however many attempts you've made to mount your hard drive just leave it plugged in
Step 11. Leave drive plugged into Mac and it should mount within 30 minutes or so after your failed mount attempts
I could not mount my hard disk due to this error :com.apple.DiskManagement.disenter error -119930878
Solution :
1) GO to activity monitor
2) Go to disk tab
3) Quit diskunmountwatch process
Try mounting your disk again, it worked for me!!
I had the same problem. It was caused by the drive being removed without being ejected correctly. I tried a few of the solutions but the thing that worked was actually just waiting like 20 minutes and it eventually sorted itself out. Someone else said it on here but the more data you have on your drive the longer it takes to figure itself out. So I would try giving it a few hours before going into the terminal or buying expensive apps.
This worked for me, however it was called fsck_*** . I ended the task and the drive mounted fine.
Thank you....
Make sure you go to the "disk" tab in the Activity monitor to look for the process.
Had the same issue yesterday, ended up downloading DiskWarrior to rebuild the directory file (It took like an hour for it to be rebuilt and had no data loss)
This worked perfectly.
DiskWarrior. It's really, really expensive, but it mounted my
unreadable hardrives and rebuilt the directories so disks mount. No
data loss! No guarantees, but it worked for me.
I tried DiskWarrior. It's really, really expensive, but it mounted my
unreadable hardrives and rebuilt the directories so disks mount. No
data loss! No guarantees, but it worked for me.
An external disk refuses to mount, com.apple.DiskManagement.disenter error -119930868.
