Boot with NFS on MIPS32

mike zheng mail4mz at
Thu Dec 4 08:06:12 EST 2008

Hi All,

I have one MIPS32 embedded system with Linux Kernel Right
now, I have problem to boot from NFS. The NFS server works fine. I am
able to mount the directory from anther Linux work station. I attach
the .config file, there maybe some config flags I forget to open.

Thanks for your help,


Here is the kernel command line:
Kernel command line: root=/dev/nfs rw

Here is the error:
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
IPv6 over IPv4 tunneling driver
sit0: Disabled Privacy Extensions
NET: Registered protocol family 17
802.1Q VLAN Support v1.8 Ben Greear <greearb at>
All bugs added by David S. Miller <davem at>
VFS: Cannot open root device "nfs" or unknown-block(0,255)
Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,255)
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