Many thanks again for the kind offer, Keef.
I did eventually get ML9.2 up and running but it seemed to be lacking any way of file listing or manipulation (the main object of installing it!). Tried all that was offered in the menus but the nearest it would get was listing the drives without showing what was in them.
All appears to be academic now as it looks like the PSU has objected to all the activity and gone on its holidays.