Date: Sun, 11 May 2003 22:13:39 -0700 From: Doug Hardie <bc979@lafn.org> To: Andy Farkas <andyf@speednet.com.au> Cc: freebsd-questions@freebsd.org Subject: Re: Adaptec SCSI controller problem Message-ID: <7DFE4700-8438-11D7-8A86-000393681B06@lafn.org> In-Reply-To: <20030511095316.O30401-100000@hewey.af.speednet.com.au>
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On Saturday, May 10, 2003, at 16:57 US/Pacific, Andy Farkas wrote: > On Sat, 10 May 2003, Doug Hardie wrote: > >> I have a system with a Adaptec 2940 Ultra SCSI adapter controller. >> The >> original configuration had 1 disk internal and nothing external. The >> external connector had nothing plugged into it. All worked fine. >> However, I tried to add a DLT drive to the external connector. On >> boot, the system hung because it couldn't find the disk. Its supposed >> to boot off the SCSI drive. Running the adaptec scsi utilities it >> found both the internal disk and the external DLT drive. The disk has >> id 0, the DLT 5 and the controller 7. So, I removed the cable from >> the >> system as I just didn't have time to address that issue at the moment. >> However, it still hung at the same point in the boot. No sequence of >> disconnection of cards, disks, connectors etc. would bring back the >> boot capability. It consistently gets an error message that there is >> no terminator. So, I added a terminator on the external jack. It now >> boots properly. Something has obvioulsy changed but I can't figure >> out >> what it is. I still need to use the DLT - with the drive, and I need >> to return the terminator as its borrowed. Any ideas on how to make >> this work? Thanks. > > Turn off termination on the card (using bios uitility). > > Make sure both the disk and the dlt drive have termination enabled. Thanks for the tip. That worked. I don't know why since the descriptions of the termination settings in the user's guide has multiple descriptions (different) for the various settings. I just tried each till I found one that works. I was able to get the DLT to work and recovered the data I needed and then got the system to work without the terminator afterwards.
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