20 Mar
2000
20 Mar
'00
10:26 a.m.
I also had problems with a IBM 0661 disk. I was unable to get it to 512
byte sectors from 524/sector using either RZDISK (VMS) or TEST 75 on my
3100-M76.
I was able to format it on my RS/6000-220 using the diag program's service
aids/disk media service aid/format disk option in AIX.
Although there were no command parameters and no information from AIX on
what is was doing, when it was done the disk was reformatted to 512 bytes
and I was able to use the disk on the VAX and later make a spare bootable
unix system disk on my DEC mips machine.
Perhaps the IBM format also turned off the "target initiated sync
negotiation" for AIX in the saved config code page in the drive.
Paul
On Mon, 20 Mar 2000 jkunz(a)unixag-kl.fh-kl.de wrote:
Run the PROM
based formatter on the drive using "TEST 75" to the
monitor. I never did
this and had no problems connecting various disks
from Fujitsu, Seagate, Quantum, IBM (including a 1,8GB 0664), ... to a
VS3100m76. The only problematic disk I found is the IBM 0661. This
disk is knowen to be problematic due to the SCSI implementation of the
firmeware of the disk. (e.g. target initiated sync negotiation) -- 
21 Mar
21 Mar
4:08 a.m.
Hi Paul,
I also had problems with a IBM 0661 disk. I was unable
to
get it to 512 byte sectors from 524/sector using either
RZDISK (VMS) or TEST 75 on my 3100-M76.
I've also had trouble with these drives. I have a pair in my PS/2-9595 which
work fine in that machine, but won't work reliably in my Celeron based
machine (they work for a while, then suddenly become inaccessible for no
apparent reason).
I'd love to know why this is.
TTFN - Pete.
--
Hardware & Software Engineer. Sound Engineer.
Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC)
peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk
--
4:04 a.m.
From: "Peter Pachla"
<peter.pachla(a)wintermute.org.uk>
To: <classiccmp(a)classiccmp.org>
Subject: Re: New drives in the M3100/M76
Date: Tue, 21 Mar 2000 18:08:39 -0000
Organization: WinterMute
Reply-to: classiccmp(a)classiccmp.org
Hi Paul,
1. This is early first MR drives and will not work (marble dropping
noise) if the too long screws grounds out the disc pack casing.
That is reason because of so much insulation tapes wrapped up disc
pack itself.
2. They run hot, cool them.
Don't take them apart ever. There is few parts that is used once and
can't be used again on reassembly. IBM does sells the rebuild kit
with new circuit boards and few parts required but cost as much as a
new drive itself when new. But this is only temporary solution and
somewhat chancy and is last resort to get data off.
If anyone happens to have these dead
0661 and 0662's, I'm interested in them for tear-down analysis.
IBM does have jumper info on their website for these. :-)
Needs to use LLF on any peecee controller or use a desktop or tower
IBM ps/2 to convert them to standard 512 per sector type. I have
done that once in a while successfully.
Cheers!
Wizard
I also had problems with a IBM 0661 disk. I was
unable to
get it to 512 byte sectors from 524/sector using either
RZDISK (VMS) or TEST 75 on my 3100-M76.
I've also had trouble with these drives. I have a pair in my PS/2-9595 which
work fine in that machine, but won't work reliably in my Celeron based
machine (they work for a while, then suddenly become inaccessible for no
apparent reason).
I'd love to know why this is. TTFN - Pete.
24 Mar
24 Mar
10:40 a.m.
Hi,
Yes, I downloaded IBMs technical manual on these drives - it goes to great
pains to warn you against grounding the drive chamber to the chassis with
long screws....
I'd love
to know why this is.
1. This is early first MR drives and will not work (marble
dropping noise) if the too long screws grounds out the disc
pack casing. 2. They run hot, cool them.
They were getting hot, but not THAT hot. Then again the drive bays they were
sat in weren't exactly in the best position to get good cooling.
Needs to use LLF on any peecee controller or use a
desktop or
tower IBM ps/2 to convert them to standard 512 per sector type.
I have done that once in a while successfully.
Yep, they format fine on this AdvanSys SCSI controller I use in my PC (no
IDE (spit) devices in sight). Just wish they'd keep working....
TTFN - Pete.
--
Hardware & Software Engineer. Sound Engineer.
Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC)
peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk
--
9039
days inactive
9043
days old
3 comments
3 participants
participants (3)
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jpero＠cgocable.net -
peter.pachla＠wintermute.org.uk -
thompson＠mail.athenet.net