On Sun, 16 Jan 2011 11:00:01 -0700 (MST) Warren Block <wbl...@wonkity.com> wrote:
> On Sat, 15 Jan 2011, per...@pluto.rain.com wrote: > > > Jerahmy Pocott <quaken...@optusnet.com.au> wrote: > > > >> I have a USB Drive that was working fine under 7.3, but since > >> updating to 8.1 no longer has the correct /dev entries. Under > >> 7.3 it was da0s1, in 8.1 there is now only da0 and da0a, which > >> shouldn't exist... > > da0s1 is MBR, da0a is "dangerously dedicated". I would not expect > differences between 7 and 8 USB to show that on an existing drive. If > the drive was reworked during the 7-to-8 upgrade--maybe with "bsdlabel > auto"--that would be a more likely explanation. The actual explanation is the new geom partitioners introduced in 8.0. The disk has an MBR in block 0 and a forgotten BSD label (dangerously dedicated) in block 1. 8.x sensibly ignores one of them; unfortunately it ignores the MBR, not the unwanted BSD label. The solution is: # dd if=/dev/zero of=/dev/da0 seek=1 count=1 _______________________________________________ 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"
