#: 16979 S1/General Interest
    08-Nov-92  00:14:35
Sb: #16956-Dmode
Fm: Kevin Darling 76703,4227
To: PHIL SCHERER 71211,2545 (X)

Yikes :-)

It's been so long since I formatted my hard disk, that I can only vaguely
remember the details.  Do you have Disto manuals?

First things first:  what kind of controller board are you using?  A SASI one
with two hard drive connectors?   Or are both drives embedded SCSI?  It'll make
a difference.

If it's a separate controller board, then I believe that the default Disto
descriptors are for 20Meg drives.  You can check them to see.  The main thing
is that you'll be using 256-byte sectors instead of 512-byte sectors (eg: IBM
style), so the sectors per track would be about twice the IBM style, or 32
sectors/track.

Hmm.  I don't have the Disto dmode around, so I can't recall if it took hex or
decimal.  Post the output of a dmode of your current hard drive and we can
figure it all out.

The init command and table, btw, usually contains something like this in hex:
 0C    -- sasi init command
 0280  -- 640 cylinders
 08    -- ?? number of heads
 0280  -- reduced write current cylinder
 0280  -- precomp cylinder
 0B    -- max error correction data length

The drive number needs to be different for a second drive, of course.  Try the
Disto H1 descriptor.  - kev