Date: Mon, 23 Nov 2009 08:16:01 +1100 From: John Marshall <john.marshall@riverwillow.com.au> To: Johan Hendriks <Johan@double-l.nl> Cc: freebsd-current@freebsd.org Subject: Re: 8.0 can't find/read label on da3 (7.2 OK) Message-ID: <20091122211600.GA1094@rwpc12.mby.riverwillow.net.au> In-Reply-To: <57200BF94E69E54880C9BB1AF714BBCBA5722F@w2003s01.double-l.local> References: <20091121120754.GA30495@rwpc12.mby.riverwillow.net.au> <57200BF94E69E54880C9BB1AF714BBCBA5722F@w2003s01.double-l.local>
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[-- Attachment #1 --] On Sat, 21 Nov 2009, 20:14 +0100, Johan Hendriks wrote: > >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=/dev/zero of=/dev/ad1 oseek=1 bs=512 count=1 > > where /dev/ad1 is my device. You should see some messages from > GEOM_LABEL removing and assigning new labels. Thank you Johan, Yes, this disc was partitioned in "dedicated" mode. The above recipe solved my problem. It may be a good idea for somebody knowledgeable in this field to give attention to the "Dedicated Mode" Section 18.3.2.2 of the Handbook if this mode now unsupported. -- John Marshall [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.13 (FreeBSD) iEYEARECAAYFAksJqhAACgkQw/tAaKKahKIfkACglNJsm1zy5bBWIE+MDjFFD7N/ r5kAn1qMkt5z1Iy5tb8gBDXnhUQILG/a =CE+d -----END PGP SIGNATURE-----help
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