Date: Sun, 28 Jul 1996 05:45:03 -0400 (EDT) From: Peter Dufault <dufault@199.232.245.2> To: grog@freefall.freebsd.org (Greg Lehey) Cc: hdalog@zipnet.net, scsi@freefall.freebsd.org Subject: Re: Setting disk sector size? Message-ID: <199607280945.FAA01186@199.232.245.2> In-Reply-To: <199607272253.PAA09896@freefall.freebsd.org> from "Greg Lehey" at Jul 27, 96 03:53:10 pm
next in thread | previous in thread | raw e-mail | index | archive | help
> > Since this is a used drive, we don't have any information about the > jumpers. Looking at the drive, I'd guess it's made by IBM, and it has > very few jumpers. I think I'm going to have difficulty following that > possibility. > > It seems to me that an obvious approach would be to try to write > back the mode page and see what happens. What command does that? I think I've figured it out - I think you need to change it in the block descriptor header instead of the mode page. I found this reference for an IBM drive with changeable geometry: http://www-i.almaden.ibm.com/storage/techsup/hddtech/06614/06614mso.htm And note that they specify the block length separately outside of the mode pages: > Changeable parameters are: > > Block descriptor > Block length > > Page 0 > QPE (qualify post error) I have to leave here now - I have a ride waiting. Later I'll put together a script for you to change that if you don't have the appropriate docs. -- Peter Dufault Real-Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199607280945.FAA01186>