Date: Tue, 28 Aug 2001 11:45:42 -0400 From: Joe Abley <jabley@automagic.org> To: freebsd-questions@freebsd.org Subject: mounting a slice from a NetBSD bios partition using FreeBSD 4.4-RC Message-ID: <20010828114542.B15182@buddha.home.automagic.org>
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I have a NetBSD FFS partition on a SCSI disk that I would like to mount
from FreeBSD, but I can't figure out how to do it. Is there some
fundamental difficulty here I should be aware of?
The NetBSD filesystem on partition 2 was made using NetBSD 1.5.1 i386.
goose# mount /dev/da0s2a /mnt
mount: /dev/da0s2a on /mnt: incorrect super block
goose# mount /dev/da0s2 /mnt
mount: /dev/da0s2 on /mnt: incorrect super block
goose#
goose# uname -a
FreeBSD goose.home.automagic.org 4.4-RC FreeBSD 4.4-RC #0: Mon Aug 27 22:24:43 EDT 2001 jabley@goose.home.automagic.org:/usr/obj/usr/src/sys/GOOSE i386
goose# fdisk
******* Working on device /dev/da0 *******
parameters extracted from in-core disklabel are:
cylinders=4462 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=4462 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 20980827 (10244 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 1023/ head 254/ sector 63
The data for partition 2 is:
sysid 169,(NetBSD)
start 20980890, size 20964825 (10236 Meg), flag 0
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 254/ sector 63
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
The old NetBSD disklabel was as follows (partition 2 appeared as slice h):
# /dev/rsd0d:
type: unknown
disk: mydisk
label:
flags:
bytes/sector: 512
sectors/track: 395
tracks/cylinder: 12
sectors/cylinder: 4740
cylinders: 15110
total sectors: 71687340
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # microseconds
track-to-track seek: 0 # microseconds
drivedata: 0
8 partitions:
# size offset fstype [fsize bsize cpg/sgs]
a: 104217 63 4.2BSD 1024 8192 16 # (Cyl. 0*- 21)
b: 1227660 104280 swap # (Cyl. 22 - 280)
c: 20974437 63 unused 0 0 # (Cyl. 0*- 4424)
d: 71687340 0 unused 0 0 # (Cyl. 0 - 15123*)
e: 10243140 1331940 4.2BSD 1024 8192 16 # (Cyl. 281 - 2441)
f: 2047680 11575080 4.2BSD 1024 8192 16 # (Cyl. 2442 - 2873)
g: 7351740 13622760 4.2BSD 1024 8192 16 # (Cyl. 2874 - 4424)
h: 50712840 20974500 4.2BSD 1024 8192 16 # (Cyl. 4425 - 15123*)
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