chmod 777 -R /mnt rm -rf /mnt/* rm: cannot remove 'omitted': Read-only file system rm: cannot remove 'omitted': Read-only file system
Please show me how I can do this?
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As the error message says: the filesystem on which
omitted is located is read-only. You can't do anything to modify that filesystem, including removing files.
You can check the mount point of the filesystem by running
df omitted. It is probably
/mnt given the command you're running.
You can remount the filesystem as read-write by running
mount -o remount,rw /mnt
However it would be a good idea to find out why the filesystem was mounted as read-only in the first place. This may be an indication that you should not be deleting those files.
mount | grep /mnt to see what options were specified when mounting that filesystem. For an ext2/ext3/ext4 filesystem, if the options did not include
ro (read-only) but included
errors=remount-ro, it looks like the filesystem was damaged and was automatically remounted as read-only to limit the damage; you will find more information in the kernel logs.
Note that your command attempts to remove the mount point itself, but this is harmless you won't have permission to do it anyway.
By the way, I strongly urge you not to use
chmod 777. It is extremely rare to actually need these permissions, and they can cause a lot of harm (especially when you typo the argument, but even when not). If you try to remove a file and get a “permission denied” error, all you need to do is give yourself permission to write to the containing directory: generally, that's
chmod -R u+w /path/to/toplevel/directory.
Re-mount did not work for me--but directly unmounting the fifesystem did get rid of it. I was trying to get rid of a directory tree called /Volumes/InstallMe/ on a mac.
/Volumes$ ls -l total 8 drwxr-xr-x@ 4 204 6 Apr 07:43 InstallMe lrwxr-xr-x 1 1 1 Feb 21:12 Macintosh HD -> / /Volumes$ mount -o remount,rw InstallMe/ mount: InstallMe/: unknown special file or file system. /Volumes$ sudo diskutil unmount InstallMe/ Password: Unmount successful for InstallMe/ /Volumes$ ls Macintosh HD