Kernel help

[Christopher Glanville]

Hi, 
Can anyone help me. I am trying to compile the new kernel 2.6.20.2 to
include drivers for my wireless WAN which doesn't currently work with
Ubuntu 6.10.
I get the error:
Done
Begin: Waiting for root filesystem....
It just hangs here for a long time. After about 5 minutes it drops to a
shell. 
I don't know how to fix this. I have been searching for days and have
found plenty of people with this error but no suitable solutions. 
My grub menu.lst file is below:
title           Ubuntu, kernel 2.6.20.2-custom
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.20.2-custom root=/dev/sda1 ro quiet
splash
initrd          /boot/initrd.img-2.6.20.2-custom
savedefault
boot

title           Ubuntu, kernel 2.6.20.2-custom (recovery mode)
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.20.2-custom root=/dev/sda1 ro single
initrd          /boot/initrd.img-2.6.20.2-custom
boot

title           Ubuntu, kernel 2.6.15-28-386
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.15-28-386 root=/dev/sda1 ro quiet
splash
initrd          /boot/initrd.img-2.6.15-28-386
savedefault
boot

title           Ubuntu, kernel 2.6.15-28-386 (recovery mode)
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.15-28-386 root=/dev/sda1 ro single
initrd          /boot/initrd.img-2.6.15-28-386
boot

title           Ubuntu, kernel 2.6.15-23-386
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.15-23-386 root=/dev/sda1 ro quiet
splash
initrd          /boot/initrd.img-2.6.15-23-386
savedefault
boot

title           Ubuntu, kernel 2.6.15-23-386 (recovery mode)
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.15-23-386 root=/dev/sda1 ro single
initrd          /boot/initrd.img-2.6.15-23-386
boot

title           Ubuntu, memtest86+
root            (hd0,0)
kernel          /boot/memtest86+.bin
boot

The kernel was compiled and the ubuntu way:
http://www.howtoforge.com/kernel_compilation_ubuntu_p2

Please help.
de Chris G

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