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Newsgroups: comp.unix.bsd.netbsd.misc Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!daffy!uwvax!uwm.edu!news.alpha.net!news.mathworks.com!news.bluesky.net!news.sprintlink.net!EU.net!news.eunet.fi!KremlSun!rivendell.elvis.msk.su!news.uni-stuttgart.de!news.belwue.de!news.belwue.de!News.Uni-Marburg.DE!news.th-darmstadt.de!hrz-ws11.hrz.uni-kassel.de!phase23!citylink.dinoex.sub.org!peter From: peter@citylink.dinoex.sub.org (Peter Much) Subject: Re: Geometry Translation on IDE 1.2Gb Organization: Buero fuer Sektenforschung und Qualitaetspruefung in der Esoterik Message-ID: <DA5905.M9w@citylink.dinoex.sub.org> References: <3rhvl0$ge2@hustle.rahul.net> <3rk8fj$5pa@tribune.usask.ca> Date: Wed, 14 Jun 1995 03:43:17 GMT Lines: 40 In article <3rk8fj$5pa@tribune.usask.ca>, Bradley W Mazurek <bwm260@skorpio3.usask.ca> wrote: >First, I had to change the IDE translation mode in my BIOS. Rather than >using LBA, I used Standard CHS. Huh? IDE-Interface integrated into mainboard and doing nasty DOSish trans- lation things by default? Usually, one only has to tell the mainboard the true geometry of the drive in this step. >When I went in to reparition the disk for >DOS, DOS reported that the drive was only 523Mb (1023cyl, 64h, 63sec/tr), Yes, that's fine. This limits DOS diskspace to these ~500MB per disk, but there seems not to be an other solution. >cylinders 1-999 were DOS. That left cylinders 1000-1023 for NetBSD. Lots >of room! :) Anyway, on a hunch, a friend and I were hoping NetBSD didn't >look at the ending cylinder entry (1023) of the partition table. Next I >calculated the length of the partition from 1000-2100, put this into the >partition table using the disk editor. The numbers weren't consistent in >the parition table, but DOS ignored the Non-DOS partition, NetBSD was >happy...and we've (DOS, NetBSD and my remaining hair) all lived happily >ever after.... This should be made easier. All that is missing, is a reliable, DOS-com- patible fdisk utility to be run from boot-disk. I'm using linux' fdisk and linux' dd (no disklabels between) instead of a disk editor, and consider this a bit more flexible (i can sub-divide above 1023), but the general procedure is just the same. I don't think this being a "trick"; back in the MFM times there were already drives with >1024 cyls., which could only be fully used with unix- like OS's. I once have installed Xenix on such hardware, and it was just the same way. Peter -- Write to: Peter Much * Koelnische Str. 22 * D-34117 Kassel * +49-561-774961 peter@citylink.dinoex.sub.org much@hrz.uni-kassel.de p.much@asco.nev.sub.de