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RE: adaptec 2940U2W/ibm ultrastar 9ES problem

daemon@ATHENA.MIT.EDU (Charles Galpin)
Wed Apr 21 22:58:04 1999

Date: 	Wed, 21 Apr 1999 22:42:47 -0400
From: Charles Galpin <cgalpin@lighthouse-software.com>
To: linux-scsi <linux-scsi@vger.rutgers.edu>

In case I'm wearing out my welcome, I'd just like to thank everyone for 
their input.


>See if it can verify the drive.  If not,
>then you've definitely got a cable or termination problem.  If it can,
>especially at the higher speeds, then it's a software issue.

verified w/ the adaptec bios just fine, with the transfer rate @ 80mb too

>Have you set up the BIOS to send out spin-up command to the disk(s)?

yes, this has been on through all tests

>Oh, just one more thing.  Have you tried to blacklist the disk so
>that the non-zero LUN probe is not performed on the disk?  Among my
>disk, the Quantum Empire 1GB disk caused a problem when the non-0 LUN
>probe is done against the unit. It would lock the bus.  So I
>blacklisted it in my copy of the linux source and now don't see the
>problem any more. I am writing this on a Sun box, but the file in
>question is scsi.c if I recall correctly.

The bios has "BIOS Multiple LUN Support" off. If I get a system up, I'll try 
this though

>Check the jumpers of the disk and use preferently the most conservative
>and most simple possible setup. For example, configure it for not
>initiating negotiations.

turned of initiating negotiations, disconnect, wide negotiations, lowered 
tranfer rate to 40 on all ids - no difference

Still cannot get the MB to recognize my IDE HD. I'm going to have to try 
this drive on a another machine to make sure it's ok (a year old but never 
used).

thanks
Charles



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