I have have installed a standard knoppix 3.7 on a 1GB usb pendrive,
and it works and boots fine with the linux24 kernel.
It finds the knoppix image on /dev/sda1

However I can't get it to boot successfully from usb
with linux26 (kernel 2.6.9).

The boot process stops with the message:
Can't find KNOPPIX image

I have debugged what happens in the linuxrc script
in the initrd-image (minirt26.gz), and the problem is that
it fails to mount anything on /cdrom,
and it does try /dev/sda1 among numerous other devices.
All the correct usb-modules seems to be loaded when i do lsmod.

I have tried booting with a home-built 2.6 kernel too, but get the same result.

Has anyone managed to boot knoppix 3.7 with the 2.6 kernel from usb?