Path: utzoo!mnetor!uunet!husc6!bloom-beacon!gatech!purdue!i.cc.purdue.edu!j.cc.purdue.edu!pur-ee!uiucdcs!uiucdcsm!hartman
From: hartman@uiucdcsm.cs.uiuc.edu
Newsgroups: comp.sys.att
Subject: Re: More HD on my 3b1.  How?
Message-ID: <7600004@uiucdcsm>
Date: 15 Jan 88 04:28:00 GMT
References: <287@flatline.UUCP>
Lines: 25
Nf-ID: #R:flatline.UUCP:287:uiucdcsm:7600004:000:1100
Nf-From: uiucdcsm.cs.uiuc.edu!hartman    Jan 14 22:28:00 1988


/* Written 11:46 am  Jan 13, 1988 by gberg@hpcupt1.HP.COM in uiucdcsm:comp.sys.att */

>	According to AT&T online support, the power supply installed in
>	the 7300 with 20MB is not sufficient to feed 40MB or 80MB disks.

According to a posting from Craig Votava (ihnp4!looney!cmv) a while back,
the power supply is the same in the 7300 and the 3b1, only the way the
power is routed to the drive is different.

>	Has anyone done a straight swap of the hard disk with success?
>	If so, was the new disk a "fast" or slow variant?

I just (last week) installed a 40mb drive to replace the 20mb drive in my
7300.  My original drive was a Miniscribe 3425, which has an average access
time of 53ms.  I replaced it with a Seagate ST251, a 40ms drive.  The
swap is fairly easy, once you figure out how the thing comes apart.
Response time is a little faster (windows definately seem snappier!),
and I have not had any problems yet (knock on wood...).


---------------------------------------------------

Mark Hartman                 ihnp4!uiucdcs!hartman
                             hartman@m.cs.uiuc.edu