boot=/dev/sda2
device=ud:      # should be an alias check /proc/device-tree/aliases/hd (thanks <sourdough>)
#device=usb0/hub@1/disk@3:      # should be an alias check /proc/device-tree/aliases/hd (thanks <sourdough>)
partition=3
timeout=50
install=/yaboot

default=linux

fgcolor=yellow
bgcolor=blue
message=/boot.msg

image=/boot/vmlinux
    label=linux
    root=/dev/sdb3
    read-write
    append=" rootdelay=5 rootfstype=ext3 console=ttyS0 console=ttyUSB0,9600n8  console=tty0"