Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 exptools 1/6/84; site ihnss.UUCP
Path: utzoo!watmath!clyde!burl!we13!ihnp4!ihnss!knudsen
From: knudsen@ihnss.UUCP
Newsgroups: net.micro.6809
Subject: 37-Track OS9 for RS Drives
Message-ID: <2011@ihnss.UUCP>
Date: Sat, 14-Apr-84 00:34:03 EST
Article-I.D.: ihnss.2011
Posted: Sat Apr 14 00:34:03 1984
Date-Received: Sun, 8-Apr-84 07:15:22 EST
Organization: AT&T Bell Labs, Naperville, IL
Lines: 18

If you're stuck with one or more Shack drives on your Coco,
you can patch OS9 to squeeze a couple more tracks (36 sectors).
I now have /D0 (Shack) set for 37 tracks, and /D1 (tandon)
for 40.  Some RS drives can hack more tracks than others,
or so I've heard.  To find out how many yours can do,
just try patching D0 for 40 tracks;
FORMAT a scratch disk and see if it goes all the way;
if not, try 39 & repeat, etc.
(You may need to reset Coco when formatting fails, & reboot).
To change # tracks:
debug
l d0	(or whatever drive)
. .+18	(should print out 23)
=25	(decimal 37., etc.)
q

Once it's good, COBBLER and VERIFY new boot.  And yes, it's
worth it for just 2 more tracks...mike k