Some USB storage devices use ATAPI over bulk, not SCSI over bulk. No  
idea why, as these devices are typically non-bootable except on the  
very latest i915/i925 chipsets. Not sure if OF can grok them.

For instance:

ehci0: handing over full speed device on port 2 to uhci0
uhub4: port 2, device disappeared after reset
umass0 at uhub0 port 2 configuration 1 interface 0
umass0: Pointchips Flash, rev 1.10/1.00, addr 2
umass0: using ATAPI over Bulk-Only
atapibus1 at umass0: 2 targets
sd0 at atapibus1 drive 0: <, , 1.06> disk removable
sd0: fabricating a geometry
sd0: 16256 KB, 15 cyl, 64 head, 32 sec, 512 bytes/sect x 32512 sectors


On May 4, 2005, at 1:12 PM, Rudi Ludwig wrote:

> Hello Mathias,
>
>
> On Wed, 4 May 2005 14:55:12 +0200
> Mathias Monnerville <mathias.monnerville@paris4.sorbonne.fr> wrote:
>
>
>> Hello,
>>
>> I am tring to get my USB 1 SD card reader working. I can not access
>> the  device because the kernel seems not to know what kind of driver
>> it should use.
>>
>
> In addition to what Lennart wrote, I checked my kernel config file and
> for some reason found that I uncommented atapi at umass. If you don't
> need it maybe it helps because then there is only one choice for that
> device, to attach to SCSI.
> I suppose the card should than behave no different than a USB-stick  
> (?).
> If you have no other SCSI hardware it should then come up as /dev/ 
> sd0(a)
>
> ....
>
> umass*  at uhub? port ? configuration ? interface ?     # USB
> MassStorage
> # atapibus* at umass?
> scsibus* at umass? channel ?
> ...
>
> /Rudi
>
>
> !DSPAM:4279027e187681039217057!
>