Root cannot umount fat device mounted in fstab?

data-mine_at_else-wh.ere
Date: 04/30/04 

Date: Fri, 30 Apr 2004 04:19:14 GMT

I recently changed the fstab to include

/dev/hda3 /0/a3 vfat auto,rw,users,umask=000 0 0

in order to facilitate Linux/XP shares.

But a (root) script I had been using can no longer work
because it needs to briefly umount primary-3 and then
remount it when done. With the above line in fstab even
root cannot umount the device (unless I'm missing something)
and I never noticed this before.

What can I do short of editing fstab and rebooting
for the time of the intervention?

TIA

Relevant Pages