15 Aug
1998
15 Aug
'98
9:55 p.m.
OK, I've spent around 8 hours today going through the pile of PDP-11 stuff
that I got. In doing so I've made a disturbing discovery. Of the 4 RL02
disk packs that contain the media kit for RSX-11M 4.1, 3 of them have red
markers. You know the ones that say don't use if marker is red.
What I want to do is transfer the data off of those packs onto disk images
using one of my MV2's. This isn't a problem as I've done it before, what
concerns me is the safety of doing it since the packs are "Red".
Secondly, can a RL01 be read in a RL02 drive, or will I have to get one of
the RL01's that I got today up and running in order to archive the RL01
packs. I want to get one of them archived ASAP as it has Whitesmith C on
it (and I think Pascal).
None of the RL01's have white/red markers so I've no idea how safe they are.
Zane
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16 Aug
16 Aug
5:58 a.m.
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10:55 a.m.
On Sun, 16 Aug 1998, Tony Duell wrote:
That red marker means that the pack has been dropped
or otherwise
subjected to shock. It's possible that the platter is distorted enough to
cause a headcrash. And it's quite possible (in fact _very_ likely) that
the pack will be fine.
Yup, agreed. Those drives and packs were pretty rugged. The service
manual for my now-gone RK05s detailed disassembling the cartridge housing,
removing the platter, and manually cleaning it with isopropyl wipes! It
didn't work so well on the 20GB IDE drive I tried it on, though. Go
figure?! ;)
-wayne
12:26 p.m.
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11:47 a.m.
At 11:58 AM 8/16/98 +0100, you wrote:
Well... having had to deal with this situation a number of times, I'd add
one more comment. From the time you press 'load', you have about 15-20
seconds before the heads load.
When I'm dealing with unknown packs with the 'shockwatch' tripped, (after a
close visual inspection) I keep a hand lightly on the drive while it is
spinning up to help detect unusual vibrations. (you get used to the normal
'feel' after a while) A badly pranged pack will often give itself away in
time to abort the load (and save the heads).
YMMV! B^}
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174
What I want to
do is transfer the data off of those packs onto disk images
using one of my MV2's. This isn't a problem as I've done it before, what
concerns me is the safety of doing it since the packs are "Red".
That red marker means that the pack has been dropped or otherwise
subjected to shock. It's possible that the platter is distorted enough to
cause a headcrash. And it's quite possible (in fact _very_ likely) that
the pack will be fine.
Personally, I'd be inclined to try them - once. Keep a finger on the load
button and spin down if you get any unusual sounds. The heads _might_ be
OK if you do that.
3:42 p.m.
What I want to
do is transfer the data off of those packs onto disk images
using one of my MV2's. This isn't a problem as I've done it before, what
concerns me is the safety of doing it since the packs are "Red".
That red marker means that the pack has been dropped or otherwise
subjected to shock. It's possible that the platter is distorted enough to
cause a headcrash. And it's quite possible (in fact _very_ likely) that
the pack will be fine. Personally, I'd be inclined to try them - once.
Keep a finger on the load
button and spin down if you get any unusual sounds. The heads _might_ be
OK if you do that.
Will do, plus I'll keep Jims suggestion of watching for wierd vibrations in
mind. Unfortunatly it's looking like it will be next weekend at the
earliest before I can give them a try. I'm having a hard enough time
getting stuff moved around.
Secondly, can
a RL01 be read in a RL02 drive, or will I have to get one of
Not easily. There are 3 internal links you have to move - on the logic
board, R/W board, and the DC servo/PSU board. I can look them up for you, but
IMHO if you have an RL01, it's better to use that.
9642
days inactive
9643
days old
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