Fwd: Can't boot 8.0-BETA4 from USB stick

2009/9/8 Hans Petter Selasky <hselasky_at_c2i.net>:
> On Tuesday 08 September 2009 13:02:48 James Butler wrote:
>> Greetings all,
>>
>> I have an amd64 system (Asus A8V-MX) which boots 7.2
> from a USB flash
>> drive. Trying an 8-STABLE kernel from Saturday
> (identifies as
>> 8.0-BETA4), the system can't boot - here is the last
> bit of the kernel
>> messages (typed, with comments):
>>
>> [witness performance blah blah blah]
>> root mount waiting for: usbus2 usbus1 usbus0
>> uhub0: 2 ports with 2 removable, self powered
>> uhub1: 2 ports with 2 removable, self powered
>> root mount waiting for: usbus2
>> uhub2: 2 ports with 2 removable, self powered
>> root mount waiting for: usbus2
>> ugen2.2: <TOSHIBA> at usbus2
>> umass0: <Toshiba TransMemory, class 0/0, rev 2.00/1.00,
> addr 2> on usbus2
>> umass0:  SCSI over Bulk-Only; quirks = 0x0000
>> root mount waiting for: usbus2
>> umass0:0:0:-1: Attached to scbus0
>> Trying to mount root from ufs:/dev/da0s1a
>> ROOT MOUNT ERROR:
>> If you have invalid mount options, reboot, and da0 at
> umass-sim0 bus 0
>> target 0 lun 0  <---- This is suspicious
>> da0: <TOSHIBA TransMemory PMAP> Removable Direct Access
> SCSI-0 device
>> da0: 40.000MB/s transfers
>> da0: 3875MB (7936000 512 byte sectors: 255H 63S/T 493C)
>> first try the following from  <---- The rest of the
> message that was
>> cut off above
>> the loader prompt:
>>
>> etc. etc. until the mountroot> prompt, and after that
> even specifying
>> the device doesn't work (and ? doesn't list it). It
> seems to my
>> non-hacker eyes that the device is not attaching until
> after it should
>> be.
>>
>> Any help would be appreciated, and I can provide
> further information as
>> needed.
>
> Hi,
>
> It looks like your device is detected too late. Have you
> tried another USB port? Or plugging in another dummy USB
> device?

I have tried on all the ports at the back of the box, but I just
remembered there's another at the front which I will try this evening.
What do you mean by "dummy USB device"? Just having something else
plugged in at boot? I will also try another USB drive tonight.

Thanks,
James