Date: Wed, 26 Sep 2007 09:40:04 -0500 From: Joe in MPLS <joe@gracenpeace.net> To: freebsd-questions@freebsd.org Subject: Re: Can't boot new disk unless it's on the 2nd IDE channel Message-ID: <46FA6F44.5000606@gracenpeace.net> In-Reply-To: <46F9EFB8.70305@gracenpeace.net> References: <46F9EFB8.70305@gracenpeace.net>
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Should have included this the first time:
When the disk is on the first channel, the BIOS reports and "invalid
partition table" then the boot loader runs anyway until I end up at a
"mountroot>" prompt. Whatever I try to enter at the prompt I'm told the
disk doesn't exist. It doesn't matter which disk my fstab mount points say.
If I have the disk on the second channel it boots just fine regardless
of whether there's a disk on the first channel or not.
..jgm
Joe in MPLS wrote:
> Several months ago I bought a bigger (IDE) disk and set about the task
> of moving a FreeBSD 6.1 STABLE #0 system to teh new disk. I did the
> fdisk, boot0cfg and bsdlabel stuff and dumps piped to restores to get
> all the bytes moved. I thought all was well so I got lazy and never
> removed the old disk.
>
> After doing an update this week via make buildworld etc, I realized
> that the box was still booting from the old small drive and loading an
> old kernel before mounting everything mentioned in /etc/fstab.
>
> I used fdisk to make the 1st slice of teh new disk active, edited
> fstab to change all the ad2s1x entries to ad0s1x, disconnected the
> first drive and moved the new drive to the first IDE channel. No joy.
>
> I used bsdlabel -e to change my "/" partition from ad2s1d to ad2s1a
> (sysinstall disklabel would not let me assign "a" to a partition on
> the second disk). Still no joy and worse, it wouldn't boot even with
> the first disk in place.
>
> I managed to get it booting with both drives installed again, but now
> it wants my fstab entries to be "ad2a", "ad2e" etc. It doesn't like
> the "ad2s1x" stuff in there any more. Then for the heck of it, I
> disconnected the first drive, left the new drive on the second channel
> and it booted just fine!
>
> here's fdisk output:
>
> [root@shorty ~]# fdisk
> ******* Working on device /dev/ad2 *******
> parameters extracted from in-core disklabel are:
> cylinders=119705 heads=16 sectors/track=255 (4080 blks/cyl)
>
> Figures below won't work with BIOS for partitions not in cyl 1
> parameters to be used for BIOS calculations are:
> cylinders=119705 heads=16 sectors/track=255 (4080 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:
> <UNUSED>
> The data for partition 2 is:
> <UNUSED>
> The data for partition 3 is:
> <UNUSED>
> The data for partition 4 is:
> sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
> start 0, size 50000 (24 Meg), flag 80 (active)
> beg: cyl 0/ head 0/ sector 1;
> end: cyl 1023/ head 254/ sector 63
>
> I don't know why part #4 is active when I marked #1 active earlier
> tonight... and the disk is way bigger than 24 MB as shown by df -h:
> [root@shorty ~]# df -h
> Filesystem Size Used Avail Capacity Mounted on
> /dev/ad2a 1.9G 191M 1.6G 10% /
> devfs 1.0K 1.0K 0B 100% /dev
> /dev/ad2e 1.9G 2.4M 1.8G 0% /tmp
> /dev/ad2g 176G 7.8G 154G 5% /usr
> /dev/ad2f 44G 558M 40G 1% /var
> devfs 1.0K 1.0K 0B 100% /var/named/dev
>
> and here's bsdlabel:
>
> [root@shorty ~]# bsdlabel ad2
> # /dev/ad2:
> 8 partitions:
> # size offset fstype [fsize bsize bps/cpg]
> a: 4194304 0 4.2BSD 2048 16384 28552
> b: 4194304 4194304 swap
> c: 488397168 0 unused 0 0 # "raw" part,
> don't edit
> e: 4194304 8388608 4.2BSD 2048 16384 28552
> f: 94371840 12582912 4.2BSD 2048 16384 28552
> g: 381442416 106954752 4.2BSD 2048 16384 28552
>
> How do I make this "ad0" instead of "ad2"?
>
> TIA ...jgm
>
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