From owner-FreeBSD-users-jp@jp.freebsd.org  Fri Aug 13 22:22:44 1999
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Date: Fri, 13 Aug 1999 22:22:39 +0900
Message-ID: <14260.7199.823279.40973P@ett.sat.t.u-tokyo.ac.jp>
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: FreeBSD-users-jp@jp.freebsd.org
In-Reply-To: In your message of "Fri, 13 Aug 1999 20:19:29 +0900"
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Subject: [FreeBSD-users-jp 44897] Re: MAGIC NUMBER WRONG
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At Fri, 13 Aug 1999 20:19:29 +0900,
Toshihiro Ono <ono-t@ma.kcom.ne.jp> wrote:
> 
> $B@P2O!w#D#S#K$5$s!"$3$s$P$s$O!#(B
> $B>.Ln$G$9!#(B
> 
> $BAa5^$J%"%I%P%$%9$"$j$,$H$&$4$6$$$^$9!#(B
> 
> >http://www.jp.FreeBSD.ORG/QandA/HTML/561.html
> >http://home.jp.FreeBSD.ORG/cgi-bin/showmail/users-jp/2247
> 
> $B%"%I%P%$%9D:$$$?>e5-(B URL $B$r;29M$K!"(B
> 
> # fsck -y -b 32 /dev/rwd0s2f
> # newfs -N /dev/rwd0s2f
> # fsck -b *** /dev/rwd0s2f
> 
> $B$H9T$$!"(B
> $BI|5l$r;n$_$?$N$G$9$,%@%a$G$7$?!#(B
> 
> $BAjJQ$o$i$:!"(B
> 
> BAD SUPER BLOCK: MAGIC NUMBER WRONG
> 
> $B$HI=<($5$l%^%&%s%H$G$-$^$;$s!#(B
> 
> $B$^$?2?$+%"%I%P%$%9M-$j$^$7$?$i!"(B
> $B59$7$/$*4j$$$7$^$9!#(B

partition $B$,$9$C$+$j>e=q$-$5$l$F$$$k$+(B, $B$"$k$$$O(B partition
$B$N>pJs$,4V0c$C$F$$$k$N$+$b$7$l$^$;$s(B.
brute force $B$G$9$,(B, $B$H$j$"$($:(B Magic number $B$rC5$7$F$_$F$O(B
$B$I$&$G$7$g$&$+(B?
$B!t;d$O$3$NJ}K!$G(B, partition table $B$,$U$C$H$s$@(B, disk $B$r$J$s$H$+(B
$B!t:F@8$7$?$3$H$,$"$j$^$9(B.

# dd if=/dev/rwd0s2f bs=64k | od -X | grep 00011954
($B;29M(B /sys/ufs/ffs/fs.h)

$B$=$l$J$j$K(B, disklabel $B$d(B UFS $B$K$D$$$F$NCN<1$,$J$$$HI|5l$O(B
$BFq$7$$$N$G$O$J$$$+$H;W$$$^$9(B.

$B$A$J$_$K(B Magic number $B$O(B super block $B$,@5$7$$$b$N$G$"$k$3$H$r(B
$B3NG'$9$k<jCJ$N(B1$B$D$G(B, $B$=$l$@$1$r6/0z$K=$@5$7$F$b(B, filesystem
$B$rI|5l$9$k$N$OFq$7$$$G$7$g$&(B.

-- 
/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: finger -l simokawa@sat.t.u-tokyo.ac.jp
