Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!rutgers!mit-eddie!genrad!decvax!tektronix!uw-beaver!ubc-vision!van-bc!nvanbc!lawrence From: lawrence@nvanbc.UUCP (Lawrence Harris) Newsgroups: comp.unix.xenix Subject: Re: hard disk errors Message-ID: <379@nvanbc.UUCP> Date: Thu, 1-Jan-87 19:53:50 EST Article-I.D.: nvanbc.379 Posted: Thu Jan 1 19:53:50 1987 Date-Received: Fri, 2-Jan-87 20:41:56 EST References: <219@ablnc.ATT.COM> Reply-To: lawrence@nvanbc.UUCP (Lawrence Harris) Organization: L.H. Computing Lines: 41 Keywords: bad tracks, sectors In article <219@ablnc.ATT.COM> jrs2@ablnc.ATT.COM (J.R. Smithson) writes: ->HELP! I've had my XENIX System V running on my IBM PC clone running ->for 2 months. In that time I've had 3 separate occasions of bad ->blocks on the hard disk. I'm using a Seagate ST225 (20Mb, 78ms) ->with a DTC 5150BX controller. I have not experienced any such problems. I am running a IBM PC/AT with two full height Seagate 20Mb drives. The system as a whole has been running for over two years with only minor problems. ->1. Does turning off the power cause the heads on the hard disk to land -> on the platter and create bad tracks? I am using the full height Seagete 20 meg drives and they park there heads automatically (you can here them go THUNK when you shut the power off). I do leave the power on all the time, I wore out a CDC 20 meg drive after two years continuous operation. But, I understand there were reliablility problems with this drive anyhow. ->2. If the above is true, does XENIX have a utility to park the heads -> over a safe zone before power off? /etc/haltsys??? I am running IBM XENIX 2.0 (Microsoft XENIX V) and whenever you issue the haltsys command it does park the heads automatically. ->I'd leave the machine powered up all the time but it does throw out a bit ->of RF interference for my TV. You could try some passing all the external cables though some ferrite beads to try and chock :-) off the rf noise. This is not one of my strong points though and maybe somebody else could comment on how to reduce rf interference. ->Please post replies to this group as I'm sure all are interested. -> -> Jim Smithson {ihnp4}!ablnc!jrs2 (305)834-5439 -- ------------------------------------------------------------------------------ UUCP: { ihnp4!alberta, tektronix!uw-beaver }!ubc-vision!van-bc!nvanbc!lawrence PHONE: 1-604-736-9241 (09:00-17:00 PDT)