Unable to boot from external USB DVD drive

elekktretterr at exemail.com.au elekktretterr at exemail.com.au
Tue Aug 18 23:56:51 PDT 2009


>
>     Hmm.  It sounds like the kernel might not be able to attach
>     the USB dvd drive on boot.
>
>     Try plugging the USB dvd drive into a different usb port.
>
>     I don't know whats up with the keyboard.  Usually ps/2 keyboards
>     work fine and usb keyboards have problems.


Ok I have made a slight progress. It seems that the BIOS was configured to
always use USB 2.0 (480Mbps), after switching to 12Mbps, the drive got
recognized by the kernel at /dev/cd8 but mountroot still failed (and
keyboard didnt work). Why cd8? I guess this is related to not using ehci
by default. Why are we still not supporting USB 2.0 out of the box?

Cheers,
Petr






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