Thanks for that, it's what I understood.
However. the situation we have here (Large NT Network) is that after an unpredictable time span of using disks with no problems, we suddenly, without warning get a message stating 'Incorrect Volume', and it is impossible to open any files on the affected disk no matter what program they were written in.
The Network guys here just tell us that the disks should have been re-formatted before use to make them compatable with NT.
Seems to me that the problem lies with the NT Network, not the disks, but my hardware knowledge is limited.
Any further thoughts??