Date: Tue, 27 May 2003 00:30:42 +1000 (EST) From: Ernie Elu <ernie@eis.net.au> To: freebsd-fs@freebsd.org Subject: Superblock recovery from backup block 32 Message-ID: <200305261430.AAA19596@tinny.eis.net.au>
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I have an IDE drive running FreeBSD 4.8-RELEASE that had a superblock corruption on the / partition as a result of a faulty motherboard. When I do an fsck_ffs -o -b 32 /dev/ad2s2a it passes all the scans. However after that fsck_ffs /dev/ad2s2a still fails: root # fsck_ffs /dev/ad2s2a ** /dev/ad2s2a Cannot find file system superblock /dev/ad2s2a: INCOMPLETE LABEL: type 4.2BSD fsize 0, frag 0, cpg 0, size 13211287 I did a fair bit of reading the archives and I thought that fsck is meant to replace the faulty superblock automatically when you specify an alternative with the -b flag, but that is not happening. Can anyone tell me how to replace the superblock with the copy at block 32 which still seems to be o.k?
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