I've discovered a few things about my 6000HD:
1. The original hard drive controller was definitely bad. It recognized
the drive as ready, but would not format any track.
2. The Seagate ST-4038 I had previously tried to load only works for about
1/2 hour, then starts throwing errors.
3. The original 15MB hard drive works, and I was able to load the complete
development system on it. During the hdinit process, about a dozen "no
space on dev 1/1" messages appeared, but the installation proceeded.
4. I believe both Seagate ST-251s are good, but both go not-ready during
the installation process. When I get a chance, I'm going to experiment
with taping over pin 2 on the control cable. This was originally the
signal to reduce write current on inner tracks, but then became a 4th head
select line on later drives. The ST-251 should be ignoring it, but it's
possible that the RWC signal is causing problems. This SHOULD only be a
problem with drives that have more than 8 heads, like the ST-4096.
Mike Loewen mloewen@...
Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/