Date: Sat, 21 Nov 2009 20:14:11 +0100 From: "Johan Hendriks" <Johan@double-l.nl> To: "John Marshall" <john.marshall@riverwillow.com.au> Cc: freebsd-current@FreeBSD.org Subject: RE: 8.0 can't find/read label on da3 (7.2 OK) Message-ID: <57200BF94E69E54880C9BB1AF714BBCBA5722F@w2003s01.double-l.local> References: <20091121120754.GA30495@rwpc12.mby.riverwillow.net.au>
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>This morning I source-upgraded our main server (i386) from 7.2-RELEASE to this morning's RELENG_8_0. FreeBSD 8.0 >seems unable to discover the filesystem on /dev/da3. The earlier discs (da0, da1, da2) on that controller are fine. >If I boot 7.2-RELEASE from a live CD, bsdlabel happily reads the /da3s1 label, I can fsck the da3s1d UFS filesystem, >and I can mount the filesystem. If I boot 8.0, I lose the disc again. This is probably a dangerous dedicated disk made on 7.x I had this issue also and some member of the list gave me this hint: !!!!!!!!!!!!!!DO MAKE A BACKUP OF YOUR DATA BEFORE DOING THIS FROM YOUR 7.2 INSTALL !!!!!!!!!!!!!!!!!!! Is your disk in "dangerously dedicated" mode? If yes, this is what I did (advised by marcel@) dd if=3D/dev/zero of=3D/dev/ad1 oseek=3D1 bs=3D512 count=3D1 where /dev/ad1 is my device. You should see some messages from GEOM_LABEL removing and assigning new labels. This worked for me, i do not know if it will work for you. Regards, Johan Hendriks
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