Date: Mon, 25 Aug 1997 21:32:40 -0500 (CDT) From: bartling@cyrix.com (Steve Bartling) To: freebsd-scsi@freebsd.org Cc: dietz@cyrix.com (Carl Dietz), gregg@cyrix.com (Greg Grohoski), bartling@cyrix.com (Steve Bartling) Subject: Freebsd2.2.2, adaptec 1742A and Ultra SCSI drive Message-ID: <199708260232.VAA15184@mega.eng.cyrix.com>
next in thread | raw e-mail | index | archive | help
Please respond by email since I do not subscribe to the freebsd-scsi mailing list. I will bounce any email I receive back to the freebsd-scsi mailing list in order to keep the discussion thread active. My Problem : I replaced a defective Micropolis 2217 1.7 Gig Fast SCSI-2 drive with a new ultra scsi Micropolis 4743NS. Since Ultra-scsi is "backwards compatible :-)", I never thought much about the upgrade. I.e. I did my "homework" and attempted to make sure that Ultra-scsi was supposed to be backwards compatible. So much for being naive. Current Hardware : 1742A EISA SCSI controller, (2) Maxtor 213SY 200M SCSI-1 drives, Exabyte 8200 tape drive, Archive 2150s, Toshiba XM3401TA cdrom drive, Micropolis 4743NS This is a 4 year old rock solid AMD5x86 133 Mhz system. until the micropolis 2217 died, this system could stay up for weeks until I powered down :-). Well ... lets get to the problem. Neither DOS, W95, or freebsd could talk to this drive. Cabling/termination is not the problem. I have tried all juxtipositions of internal/ external/end-of-the-cable/beginning-of-cable/terminated/non-terminated/ terminator-power-supplied-by-the-drive/terminator-power-not-supplied Nothing helped. I then disabled "syncronous negotiation" and "disconnection" for this drive only using the usual EISA configuration utilities. Now the Micropolis 4743 will talk reliably to DOS/W95 albeit at SCSI-1 like data rates. Freebsd will read data/partition info/etc from the drive. However, any writes to this drive will "hang" the scsi bus until I hit the reset button on the computer case. I can't even install Freebsd as the scsi bus locks up as soon as freebsd attempts to write the new partion/ slice info to the drive. Has anyone experienced a similar problem ? Any idea what steps I can take other than upgrade my motherboard/scsi-card/ vlb-graphics-card ? I currently lack the funds for that approach. - Steven Bartling P.S. The adaptec technical support folks were pretty amused that I would hook up an ultra-scsi drive to a 1742A. They stated : "Unless there is a jumper on the drive to force it to use SCSI-2 negotiation and data rates, there is no chance this ultra-scsi drive will work with the 1742A". How is that for encouragement ?
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199708260232.VAA15184>