why do i get ... Kernel panic: VFS: unable to mount root fs on 01:00

["Arbind Rajbhandary" <arbind@htp.com.np>]

Dear all,
I have created bootImage.nbi 

# mknbi-linux -x -d ram -i rom -r initrd.gz -k bzImage -o bootImage.nbi 

and done everything as describe by Bill Dooley in Netboot HOW-TO document 
for Linux  when i try to boot my diskless pc i get the following message
......
........
IP-Config: Complete:
  device=eth0, addr=192.168.0.31, mask=255.255.255.0, gw=192.168.0.1,
  host=192.168.0.31, domain=, nis-domain=(none),
  bootserver=192.168.0.1, rootserver=192.168.0.1. rootpath=
NET4: Unix domain sockets 1.0/SMP for linux NET4.0
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 64K freed
Kernel panic: VFS: Unable to mount root fs on 01:00 

can you please tell me what i need to do now so that my diskless pc 
works!!!Is the problem because of kernel compiling..???? 

thank you
arbind 

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