On Fri, 8 May 2009, Steven Hirsch wrote:
Now, I'm trying to figure out how to format a SSDD
diskette for the Xerox.
They use a screwy format where track 0 is FM 128 bytes/sector (26 x 128) and
all the others are MFM 256 bytes/sector (26 x 256).
That's not screwy, that is standard IBM format for higher density disks
(except that IBM didn't have a SSDD variant, only SSSD, DSSS and DSDD).
Christian