Booting FreeBSD 8.0-RC1 from usb stick

Marius Nünnerich marius at
Tue Sep 29 14:51:36 UTC 2009

On Tue, Sep 29, 2009 at 16:03, Gavin Atkinson <gavin at> wrote:
> On Tue, 2009-09-29 at 14:40 +0200, Marius Nünnerich wrote:
>> 2009/9/29 Andrey V. Elsukov <bu7cher at>:
>> > Marius Nu"nnerich wrote:
>> >>
>> >> Explicitly setting the root partition
>> >> (vfs.root.mountfrom="ufs:/dev/da0s1a") in /boot/loader.conf does not
>> >> help either: Again, the system knows which partition it should mount
>> >> to "/", but it fails to do so. (vfs.root.mountfrom.options=rw was set
>> >> too).
>> >
>> > It's known problem and we are waiting for fix. There is a race between
>> > USB and CAM/SCSI subsystems.
>> OK, thank you! Is there a PR open for this?
> I think your problem is probably usb/138798.

Thanks! I hoped there would be some quick fix like putting some DELAY
into CAM or usb to go ahead for now but it isn't. Anyone has an idea
for where to put this or a patch to try? I suppose usb should finish
before CAM comes along?

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