Date: Sun, 11 Jul 1999 22:26:40 +0900 From: Kazukiyo UEDA <kueda@jupiter.qse.tohoku.ac.jp> To: joe@pavilion.net, niall@pobox.com Cc: hackers@FreeBSD.ORG Subject: re: HELP!! Slice info disappeared Message-ID: <19990711222640R.kueda@jupiter.qse.tohoku.ac.jp> In-Reply-To: Your message of "Fri, 9 Jul 1999 10:01:16 %2B0100" <19990709100116.G50525@pavilion.net> References: <19990709100116.G50525@pavilion.net>
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Hello Niall and Josef,
Thanks for your great help.
Finally I get all data on the disk back after the struggle on the
weekend :) I run the program you sent me, but I got nothing from it.
I guess the reason as follows:
(1) The program fetches each chunks of 16 blocks from the disk and
check if they are superblocks.
(2) My disk is sliced into 3 parts. The fist one is for MS-DOS (FAT
format), and the rest of them are FFS. It's highly possible that the
offset block of the beginning of FFS slice is not a multiple of 16.
(3) So I did:
# for i in 0 1 2 3 ... 15; do
# ./findsb /dev/wd2 $[ (estimated end of block for FAT slice)*512 + $i*512 ]
# done
After I got the info from the superblocks, getting back data was easy.
Again, thanks much for your great help. You saved a lot of my time to
reconstruct the data from scratch.
Sincerely yours,
--
Kazukiyo Ueda
From: Josef Karthauser <joe@pavilion.net>
Subject: re: HELP!! Slice info disappeared
Date: Fri, 9 Jul 1999 10:01:16 +0100
> Hi Kazukiyo,
>
> This is certainly possible. I've enclosed a hack from Niall Smart that should
> generated enough information to for you to reconstruct it. I'm working on a
> general solution to this for inclusion FreeBSD as shipped, but it's at home
> and I'm at work, that said it's Niall's basic code saved my harddisk a few weeks
> ago :)
>
> Joe
>
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