Date: Sun, 3 Aug 2003 11:10:01 +0000 From: Alexander.Farber@t-online.de (Alexander Farber) To: freebsd-questions@freebsd.org Subject: Mounting OpenBSD partitions (can see only root) Message-ID: <20030803111001.GB30773@pref.my.domain>
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Hi,
I have a dual-boot PC and would like to mount the
OpenBSD partition (with 3 slices: root, swap and
/home) on the hard disk ad1 under FreeBSD 5.1.
However there are only 2 ad1 devices visible:
newhope:alex {264} ll /dev/ad1*
crw-r----- 1 root operator 4, 12 Aug 3 09:50 /dev/ad1
crw-r----- 1 root operator 4, 20 Aug 3 09:50 /dev/ad1s4
The FreeBSD-disklabel complains about those:
newhope:alex {262} sudo disklabel /dev/ad1s4
disklabel: /dev/ad1s4: no valid label found
newhope:alex {263} sudo disklabel /dev/ad1
disklabel: /dev/ad1: no valid label found
And the FreeBSD-fdisk shows the OpenBSD partition:
newhope:alex {265} sudo fdisk /dev/ad1
******* Working on device /dev/ad1 *******
parameters extracted from in-core disklabel are:
cylinders=79408 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=79408 heads=16 sectors/track=63 (1008 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 166 (0xa6),(OpenBSD)
start 63, size 80035767 (39079 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 1023/ head 254/ sector 63
When I mount /dev/ad1s4 then it works, but I see only the
root (/) slice there. The OpenBSD /home-slice isn't visible.
I've searched archives and have found a suggestion to
run the FreeBSD-disklabel on the OpenBSD disk and add
the slices manually. But won't this corrupt my OpenBSD-
disk and make it unusable under OpenBSD? Where does
FreeBSD save the slice information? Also, is it safe
to mount OpenBSD slices read-write under FreeBSD?
Thank you
Alex
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