Date: Sat, 12 Sep 1998 14:21:17 -0400 From: Gary Algier <gaa@dgms.com> To: freebsd-questions@FreeBSD.ORG Subject: I can't disklabel a disk slice. Message-ID: <35FABB9D.D401D956@dgms.com>
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I have been struggling with disklabel in an attempt to disklabel a new slice.
I can get it to disklabel a whole disk, but not a slice:
------------------------------------------------------------------------
[whole disk -- this is a zip disk BTW]
# dd if=/dev/zero of=/dev/rsd1 count=2
2+0 records in
2+0 records out
1024 bytes transferred in 0.040394 secs (25350 bytes/sec)
# disklabel -Brw sd1 auto
# disklabel sd1
# /dev/rsd1c:
type: unknown
disk:
label:
flags:
bytes/sector: 512
sectors/track: 32
tracks/cylinder: 64
sectors/cylinder: 2048
cylinders: 96
sectors/unit: 196608
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
c: 196608 0 unused 0 0 # (Cyl. 0 - 95)
------------------------------------------------------------------------
[slice -- same disk after zeroing and fdisking]
# fdisk sd1
******* Working on device /dev/rsd1 *******
parameters extracted from in-core disklabel are:
cylinders=96 heads=64 sectors/track=32 (2048 blks/cyl)
parameters to be used for BIOS calculations are:
cylinders=96 heads=64 sectors/track=32 (2048 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 1, size 98303 (47 Meg), flag 0
beg: cyl 0/ sector 2/ head 0;
end: cyl 47/ sector 32/ head 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 98304, size 98304 (48 Meg), flag 80 (active)
beg: cyl 48/ sector 1/ head 0;
end: cyl 95/ sector 32/ head 63
# disklabel -Brw sd1s4 auto
disklabel: ioctl DIOCGDINFO: Invalid argument
# disklabel -Brw sd1s1 auto
disklabel: ioctl DIOCGDINFO: Invalid argument
------------------------------------------------------------------------
What is wrong? I have tried all "n" combinations of options to disklabel
but it seems as if the kernel won't let me disklabel a slice. Once it
has been done (vi /stand/sysinstall) it can be edited with "disklabel -e",
but that does me no good -- I can't scriptify sysinstall.
Also, if one does get it disklabeled and then the label becomes invalid
(I moved a partition on my hard disk with Partition-It) even disklabel -e
can't write the label (I tried to edit the values to make the moved
partition correct again).
Is there a bug? Am I missing some "magic" option to force it? How come
sysinstall can do it but disklabel can't?
--
Gary Algier, WB2FWZ gary.algier@dgms.com +1 609 608 2758
DGM&S Telecom, 1025 Briggs Rd, Mt. Laurel, NJ 08054 Fax:+1 609 866 8850
Paul Petzoldt on the renaming of Mount Washington:
"I Call it the New England Booby Trap. We see Ph.D.'s from private schools
taking kids up there in shorts. People die like flies up there!"
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