Date: Fri, 5 Mar 1999 23:43:37 +0000 (GMT) From: Andy Doran <ad@psn.ie> To: Doug Ambrisko <ambrisko@whistle.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: adaptec 2940u2w hangs on external disks Message-ID: <Pine.BSF.4.05.9903052335490.271-100000@vmunix.psn.ie> In-Reply-To: <199903051937.LAA27004@whistle.com>
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> Andy Doran writes: > | I believe that this is an issue with CAM. I have a bunch of DEC RZ25 disks > | here which work fine with ULTRIX, NetBSD and Linux on several different > | machines. After upgrading from FreeBSD-2.2.6 to 3.0 (and -current) > | the system hangs on boot whenever an RZ25 is hooked up. This is with a > | crappy 'ol Adaptec 1542CP controller. > > Most DEC drives as shipped with DEC system do not spin up on power up > (for sure not in the era of the RZ25). I recall that some DEC drives > had a jumper to select spin up on power up but I don't think all of them > did. I think they was also a mode page switch. I also recall that the > 1542 BIOS had options to send the command to spin up on power up. > By default, most of the old DEC RZxx disks don't spin up, yes. But these disks I do have spinning up (via the AHA BIOS). It's not any simple SCSI problem. Please don't take me the wrong way (i.e. this is an informational statement), but I do this for a living, and it's *not* a hardware problem. They work fine with all manner of cables, on DECstations with the NCR and the old SII controllers, PCs with various DPT RAID and Adaptec controllers, and FreeBSD 2.2.x with the old mach derived SCSI layer. They don't work with CAM for some reason. Andy. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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