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So this just started and I'm completely puzzled. I'm trying to make a directory or save files to one of my drives and I'm getting this error.
drwxr-xr-x 3 me me 4096 Sep 6 15:33 test
drwxr-xr-x 7 me me 4096 Sep 11 07:45 test1
drwxr-xr-x 6 me me 4096 Jun 22 19:39 test3
[me@test html]$ mkdir test4
mkdir: cannot create directory `test4': Read-only file system
I had full control on this drive up until today and I have no idea what happened. Can someone give me a hand?
Looks like the filesystem on which you are trying to create the directory is mounted read-only. If it wasn't before, it could be that an error has been detected and the filesystem has been re-mounted read-only to prevent data loss.
If you do "df -k .", you'll see the device which the directory you are in is on (e.g. /dev/hda1). If you then do "cat /etc/fstab" and look for the line corresponding to that device you may see the option: "errors=remount-ro", which is what instructs Linux to do this remounting in readonly if errors are encountered.
Check your system logs for error messages (grep for the device id, e.g. "grep hda1 /var/log/messages").