Hej Ho, On Wed, 16 Dec 2009 12:55:38 +0200, Andriy Gapon <a...@icyb.net.ua> wrote: > on 16/12/2009 11:28 Marian Hettwer said the following: >> Hej Marcel, >> >> >> On Tue, 15 Dec 2009 16:46:27 -0800, Marcel Moolenaar <xcl...@mac.com> >> wrote: >>> Yes, if you have ad2a and not ad2s1a, then you have a >>> proper dangerously dedicated disk and FreeBSD 8.x will >>> work correctly with your disk. >>> >>> If you installed "dangerously dedicated" and ended up >>> with ad0s1a (note the "s1"), then you have an invalid >>> partitioning and FreeBSD 8.x will not give you what >>> you've been getting on FreeBSD 7.x. Most of the time >>> you only need to wipe out the second sector on the >>> disk to clean it up and have FreeBSD 8.x also give >>> you ad0s1a. >>> >> okay... but how do I wipe out the second sector? >> dd if=/dev/zero of=/dev/ad8 count=1 >> would wipe out the first 512 bytes. > > You need to add seek=1 (or oseek=1, which is the same but a little bit > more > obvious) to that command. > gee, thanks! That worked. r...@talisker:/root# ls /dev/ad8* /dev/ad8 /dev/ad8s1 /dev/ad8s1a r...@talisker:/root# mount /dev/ad8s1a /BACKUP/ r...@talisker:/root# umount /BACKUP/
but, hm, whats that? r...@talisker:/root# fsck /dev/ad8s1a fsck: Could not determine filesystem type >> I'm always confused with sectors vs. >> bytes. > > You are not confused this time, HDD sector is 512 bytes. This is the > default dd > block size too. > Good to know! Cheers, Marian _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"