Won't let me do this, though I have the disks, I have put Windows 7 on it and to unmesh the two drives had to sort the RAID out - as I recall even before that it wouldn't let me so I did the RAID to get it to reformat originally.

Windows 7 is now on and lots of people ask this question (I have a Dell Dimension 9150) so its pretty old now (2006).

I take it a reformat on its own will not do? As a factory reset is that and reset. (Just if I cannot do one that is).

Any thoughts?