hard disk errors
Lawrence Harris
lawrence at nvanbc.UUCP
Fri Jan 2 10:53:50 AEST 1987
In article <219 at ablnc.ATT.COM> jrs2 at 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
--
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