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Seagate SCSI Drive timeout on a Adaptec 2940 UW

Seagate SCSI Drive timeout on a Adaptec 2940 UW

Post by Reid Sutherlan » Wed, 19 Apr 2000 04:00:00



I have a ST39236LW (9gig 7200rpm) drive and it keeps timing out when trying
to detect the drive in linux, although the onboard SCSI detection has no
problem picking it up and Windows can see the drive with no problem either.

I've tried upping the timeout period in the kernel for drive detection, I've
tried other drives and they work, I've tried this drive in windows and it
works.

My config was that I had no drives on the card when I tried this one, I also
tried it on different Adaptec cards and even dev kernel versions. AND even
different computers all together. *sigh* looks like I'm SOL, unless someone
can tell me different.

I really, really don't want to use this drive in windows. I want linux on it
badly. :(

Thanks to whoever can possibly answer this one.

--

Reid Sutherland
Senior Network Administrator
ISYS Technology Inc.
http://www.isys.ca

 
 
 
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Seagate SCSI Drive timeout on a Adaptec 2940 UW

Post by John Schamu » Wed, 19 Apr 2000 04:00:00



> I have a ST39236LW (9gig 7200rpm) drive and it keeps timing out when trying
> to detect the drive in linux, although the onboard SCSI detection has no
> problem picking it up and Windows can see the drive with no problem either.

> I've tried upping the timeout period in the kernel for drive detection, I've
> tried other drives and they work, I've tried this drive in windows and it
> works.

> My config was that I had no drives on the card when I tried this one, I also
> tried it on different Adaptec cards and even dev kernel versions. AND even
> different computers all together. *sigh* looks like I'm SOL, unless someone
> can tell me different.

> I really, really don't want to use this drive in windows. I want linux on it
> badly. :(

> Thanks to whoever can possibly answer this one.

> --

> Reid Sutherland
> Senior Network Administrator
> ISYS Technology Inc.
> http://www.isys.ca

In my experience this usually means there's a problem with termination
or a cable.  I've messed up my termination and had Win95 and OS/2 work
just fine, but when I use Linux the bus times out or the system locks
(just finished a bad week with this problem!).

Jay

 
 
 
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1. adaptec 2940 UW + SCSI HD +linux 2.0.18 + ext SCSI ZIP drive ?

I think I have now spent a reasonable amount of time reading TFM and
experimenting with
a quite large number of combinaisons of settings... But my problem is
still here.
Any help appreciated:

my linux box was happy with its 2 scsi HD (ID 0 and 6), but whenever I
connect the ZIP drive
(switchs set to ID 5, term on) on the 68 pin EXT plug of the 2940, via a
68-25 scsi Cable,
any attempt to scan the scsi chain hangs:
After detecting the first scsi hd, instead of writing drive C after the
model name, as it does
when nothing is plugged on the external scsi plug, it waits for a couple
of minutes,
before saying that no booting scsi device were found, wich then leads to

DISK SYSTEM FAILUREetc and I have to reboot
( This is even not a linux pb yet, because the 2940 Setup utility (ctrl
A at boot time)
hangs when scanning scsi IDs: it stops on the ID 6, and after a while:
time out message.)
I have tried all the scsi adapter terminaisons (although low off high on
seems suggested by the adaptec doc), and I know the zip drive is OK
because it is recognized under WINDOZE
(though I had to test that on an other machine, which had a 25 pin  scsi
ext plug, so i  used the
original Zip sci cable, andcannot be sure the 68-25 cable i m using is
ok)
Is there any scsi caveat  i am not aware of yet ?
has anyone already havethis config ( ie intern. scsi boot disk and
extern. scsi Zip and 2940 UW) to work ?
Thanks in advance !!!
arnaud.

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