On May 30, 11:02, Gene Buckle wrote: Oh, I've seen quite a few HD disks with hub rings. But most of the disks I've seen with hub rings have been relatively recent DD/SD. However, the reason I menmtioned it was that the 1541 owner insisted that she needed DD disks *because they had hub rings*, not because they are the correct coercivity; in fact she said she'd used a few HD disks but the lack of hub rings on some of them caused them not to work. So told her she was using the right disks (DD) but for the wrong reason. -- Pete Peter Turnbull Network Manager University of York