Date: Sun, 28 Jul 2002 20:14:09 +0200 From: Hanspeter Roth <hanspeter_roth@hotmail.com> To: freebsd-questions@freebsd.org Subject: reconstructing partition table Message-ID: <20020728201409.A1368@gicco.cablecom.ch>
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Hello,
yes I have no backup and I have destroyed the partition table.
Now I'm trying to reconstruct the partition table.
One of the partitions is a FreeBsd one. The disklabel seems to be
still intact. I can boot using the fixit floppy unsing /boot/loader.
But I can't boot using /kernel. Booteasy displays FreeBsd but beeps
when selecting it. Before I destroyed the partition table booteasy
was cooparative selecting FreeBsd.
I was trying Gpart Linux-fdisk, Linux-sfdisk and FreeBsd-fdisk but
couldn't manage to fix the boot problem.
The disk is a 20GB with a logical geometry of 2491/255/63.
And it seems that the FreeBsd partition starts on logical cylinder
2081. I realized now that this is beyond the 1023 boundary. But it
seems to have worked before.
Gpart found:
Primary partition(3)
type: 165(0xA5)(FreeBSD/NetBSD/386BSD)
size: 3216mb #s(6586650) s(33431265-40017914)
chs: (1023/254/63)-(1023/254/63)d (2081/0/1)-(2490/254/63)r
It shows two different chs settings.
I tryed to set the partition using Linux-sfdisk specifying start and
size in sectors. After booting the FreeBSD fixit cd fdisk shows some
strange chs setting: 1023/254/63-1023/254/63.
Then I tried to set the chs values by the fdisk of FreeBSD using
2081/0/1-2490/254/63.
But fdisk want's to ajust them:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 33431265, size 6586650 (3216 Meg), flag 80 (active)
beg: cyl 33/ head 0/ sector 1;
end: cyl 442/ head 254/ sector 63
Are we happy with this entry? [n]
No I'm not happy with this entry.
But how can I make fdisk accept 2081/0/1-2490/254/63 ?
Is there some (free/commertial) tool which can reconstruct FreeBSD
partitions?
-Hanspeter
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