[Armadillo:04154] /dev/sda1 doesn't work as root

[Elmar Mair]

Hi,

I copied the content of romfs into the first ext2 partition on an 
usb-stick (by tar and untar it on the stick). Then, I configured the 
bootloader to use /dev/sda1 as root. However, even if I get the right 
entry during startup:

Kernel command line: console=ttyAM0,115200 root=/dev/sda1 
mtdparts=armadillo2x0)

there is no difference wheter I start my Armadillo240 with or without 
the usb-stick. How can I get sure, that the USBstick is used as root 
filesystem and may I also use an ext3 partition for the root filesystem?

Best regards and thank you very much in advance
Elmar Mair