steve@dosius.zzn.com (Dosius) wrote in news:9307085f.0212091547.2cbc5310@posting.google.com: > me@lazilong.com (Lazarus I. Long) wrote in message > news:<68a2ec1b.0212090838.6d206603@posting.google.com>... >> "Joel" wrote in message >> news:<51CdnQFVIaB3_WmgXTWcow@comcast.com>... >> > I did a little searching. >> > I came across 3 different versions of DOS 3.3 on a 3.5 disk. >> > >> > AmDOS >> > OzDOS >> > UniDOS >> >> what i'd like to know is, regardless of how the software runs, are >> the *formats* the same for all three? I mean, can they all *read* >> each other's disks? ie: they all use 32 sectors and 50 tracks with >> the VTOC on {$11, $0}? I can verify that UniDOS does. > > I have an interest in trying and will try UniDOS and AmDOS on ApplePC > and Dapple. :þ > I got a copy of OzDOS, and it uses the same format. The ordering is different, however. UniDOS maps the 1st 400K to logical disk 1 and the 2nd 400K to logical disk 2. OzDOS appears separate each block in half - the lower 256 bytes to one logical disk and the upper 256 bytes to the other logical disk. -Rob