Date: Sun, 15 Dec 2002 01:14:14 -0800 (PST) From: Nate Lawson <nate@root.org> To: Yury Tarasievich <grog@grsu.by> Cc: freebsd-hackers <freebsd-hackers@freebsd.org> Subject: Re: Restoring superblock backup? Message-ID: <Pine.BSF.4.21.0212150052530.41793-100000@root.org> In-Reply-To: <3DFB9DB0.1020708@grsu.by>
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On Sat, 14 Dec 2002, Yury Tarasievich wrote: > >On Fri, Dec 13, 2002 at 02:28:00PM -0800, Nate Lawson wrote: > >>I've successfully repaired a fs with the superblock backup at 32. Now how > >>do I copy that backup to the default superblock location? fsck_ffs does > >>NOT automatically do this. > > If FS boundaries are right, one can always try newfs -N, then fsck with -b. > I tried this once and succeeded using superblock copy being really more > distant from FS start. I appreciate the help but you're both answering the wrong question. Go re-read my question above again. The current workaround (as given by mckusick@) is: --- > It used to be that when you ran with an alternate superblock, the > last question asked by fsck is whether you wish to update the > standard superblock. Answering yes would do that update for you. > As it appears that that feature got dropped, you can do the copy > manually using: > > dd if=<disk> skip=32 of=<disk> seek=16 bs=512 count=16 --- -Nate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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