On 09/10/14 23:08, Rhialto wrote:
On Wed 10 Sep 2014 at 22:53:27 +0100, David Laight wrote:(and ICL system25 whcih wanted 100 byte sectors).Or IBM's CMS which used to have 800 byte sectors. -Olaf.
And there were DEC disks which could be used on both DEC20 (where they were formatted with 9-bit bytes) and VAXen (where they were formatted with 8-bit bytes). If i remember correctly, this mean that while sectors were 512 x 9-bit bytes on a DEC20, on a VAX the same disk would have sectors of 576 x 8 bit bytes.
Roger