Date: Thu, 2 Mar 2000 19:25:21 +0100 From: Brad Knowles <blk@skynet.be> To: Andre Albsmeier <andre.albsmeier@mchp.siemens.de> Cc: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>, freebsd-stable@FreeBSD.ORG Subject: Re: Crash on boot when disks are present? Message-ID: <v04220822b4e461c4d611@[195.238.1.121]> In-Reply-To: <20000302190648.A20429@internal> References: <v0422080bb4e401fc570d@[195.238.1.121]> <20000302184212.A20215@internal> <v0422081db4e45ae73d99@[195.238.1.121]> <20000302190648.A20429@internal>
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At 7:06 PM +0100 2000/3/2, Andre Albsmeier wrote:
> You don;t have to shut it down. Simply do an 'fdisk daxxx' where xxx is
> the drivenumber. Do it for all drives attached. One with 1023/256/63 is
> enough to stop the boot process.
Here's what I get on one of the devices:
$ fdisk da1
******* Working on device /dev/rda1 *******
parameters extracted from in-core disklabel are:
cylinders=10873 heads=255 sectors/track=63 (16065 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=10873 heads=255 sectors/track=63 (16065 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 63, size 16771797 (8189 Meg), flag 80 (active)
beg: cyl 0/ sector 1/ head 1;
end: cyl 1023/ sector 63/ head 254
The data for partition 2 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 16771860, size 157902885 (77101 Meg), flag 80 (active)
beg: cyl 1023/ sector 63/ head 255;
end: cyl 1023/ sector 63/ head 254
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
I get the same for da2, and da3 is:
$ fdisk da3
******* Working on device /dev/rda3 *******
parameters extracted from in-core disklabel are:
cylinders=8698 heads=255 sectors/track=63 (16065 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=8698 heads=255 sectors/track=63 (16065 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 63, size 139733307 (68229 Meg), flag 80 (active)
beg: cyl 0/ sector 1/ head 1;
end: cyl 1023/ sector 63/ head 254
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
Devices da4, da5, and da6 are the same logical units, but
accessed through the other controller. I get the same information
for them as I do for da1-3 (which is as it should be ;-).
As far as I can tell, these shouldn't cause a problem for me
booting, should they? I mean, the number of cylinders is very high,
but the number of heads and sectors/track is right, I think.
--
These are my opinions and should not be taken as official Skynet policy
=========================================================================
Brad Knowles, <blk@skynet.be> Sys. Arch., Mail/News/FTP/Proxy Admin
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