Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ihnp4!occrsh!occrsh.ATT.COM!rjd
From: rjd@occrsh.ATT.COM
Newsgroups: comp.sys.att
Subject: Re: reformatting 3b2 harddisks
Message-ID: <144800012@occrsh.ATT.COM>
Date: 18 Jan 88 14:18:00 GMT
References: <1489@ea.ecn.purdue.edu>
Lines: 21
Nf-ID: #R:ea.ecn.purdue.edu:-148900:occrsh.ATT.COM:144800012:000:1234
Nf-From: occrsh.ATT.COM!rjd    Jan 18 08:18:00 1988


>The "formatting" utility that you mention is called DEVTOOLS you basically
>have to know someone to get something like this.  It has things on it
>like ability to write the sanity track, and do some weird things with
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>the hard disk.  I think we used it once, I don't remember exactly what for.

  If you ever end up in the position that the hard disk is OK, but somehow
the sanity track is blown away (which can happen), it can be re-written
without going to the devtools diskette.  Just turn it on, get the DISK SANITY
message, enter "mcp" or whatever you have changed it to, enter "filledt"
as program to boot off of whatever device should be the hard disk (though
the name will not appear in the table since filledt has not been run yet),
let it do it, enter the diagnostic monitor (dgmon) by the same method,
then run phase 21 system board diagnostices (dgn sbd ph 21), or whatever
phase runs the extended HD interface test (the phase number is different
on some models dependent on some things, one being the existance of a MAU
on the system).  This phase re-writes the sanity track as part of the test.
You may now boot unix, or just turn it off and back on and let it auto-boot.

Randy