Date: Sun, 19 Aug 2001 20:10:09 +0300 From: Valentin Nechayev <netch@iv.nn.kiev.ua> To: Mike Burgett <mike@zentek.com> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@FreeBSD.ORG> Subject: Re: boot crash after hardware change. Message-ID: <20010819201009.B318@iv.nn.kiev.ua> In-Reply-To: <200108182302.QAA06249@fw.zentek.com>; from mike@zentek.com on Sat, Aug 18, 2001 at 04:06:22PM -0700 References: <200108181954.f7IJsTS00862@mass.dis.org> <200108182302.QAA06249@fw.zentek.com>
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Sat, Aug 18, 2001 at 16:06:22, mike (Mike Burgett) wrote about "Re: boot crash after hardware change.": > >BIOS crash. I bet you configured your disk "dangerously dedicated" when > >you installed. > > Hmm... I hung the disk on the sister system, and here's what fdisk > reports: [...] > The data for partition 1 is: > sysid 165,(FreeBSD/NetBSD/386BSD) > start 0, size 8925000 (4357 Meg), flag 80 (active) > beg: cyl 0/ sector 1/ head 0; > end: cyl 555/ sector 42/ head 141 [...] > I thought if it was DD, it wouldn't have the 4 partition entries... > Is this right? No. Beginning of FreeBSD slice at C/H/S 0/0/1 is "dangerously dedicated". Fdisk may reports fictive MBR; I don't know reason of this its strange feature. I suppose another factor as possible reason: geometry 1496*142*42 means 8922144 sectors on disk, but fdisk says 8925000 which is more than. Moreover, C/H/S values in fictive MBR records are unexplainable: 556*142*42 is 3315984, (556+1024)*142*42 is 9423120, and both these values are too far from expected 8922144 or 8925000. (But, 8925000/556 is rather close to 16065 == 255*63, which means tracks of LBA.;)) All this means problems with detecting your disk geometry. /netch To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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