USB Drive Is “read-only File System” And Cannot Umount – How To Fix
I ‘just’ noticed that at some point, my USB backup drive on my server is mounted as read-only and all of my background sync cron jobs have been failing.
So I need to fix this without rebooting the server.
I can VNC into the server and running “mount” shows:
/dev/sdc1 on /media/HD103SI type ext4 (rw,nosuid,nodev,uhelper=udisks)
and umount gets:
# umount /dev/sdc1
umount: /media/HD103SI: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
How can I get this drive r/w?
2 thoughts on - USB Drive Is “read-only File System” And Cannot Umount – How To Fix
I ‘just’ noticed that at some point, my USB backup drive on my server
Have you tried “mount -o remount,rw“?
The unanswered question here is why did it go read only, and does this condition still exist?
Barry
# mount -o remount,rw /media/HD103SI/
mount: cannot remount block device /dev/sdc1 read-write, is write-protected
The burning question of the day……
Should I ‘just’ unplug it, power cycle it and reconnect it?