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RE: booting error on db1550 for kernel 2.4.31

To: 'rolf liu' <rolfliu@gmail.com>, linux-mips@linux-mips.org
Subject: RE: booting error on db1550 for kernel 2.4.31
From: Prashant Viswanathan <vprashant@echelon.com>
Date: Wed, 22 Jun 2005 17:58:48 -0700
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
> I compiled the kernel 2.4.31 using sde tools. Download linux to db1550
> through yamon. but the kernel can't find the NFS root. I tried the NFS
> system from other linux box, and the NFS is ok. Who met this same
> problem?
> 
> Looking up port of RPC 100003/2 on 10.200.0.198
> RPC: sendmsg returned error 128
> portmap: RPC call returned error 128
> Root-NFS: Unable to get nfsd port number from server, using default
> Looking up port of RPC 100005/1 on 10.200.0.198
> RPC: sendmsg returned error 128
> portmap: RPC call returned error 128
> Root-NFS: Unable to get mountd port number from server, using default
> RPC: sendmsg returned error 128
> mount: RPC call returned error 128
> Root-NFS: Server returned error -128 while mounting /nfsroot/mipsel
> VFS: Unable to mount root fs via NFS, trying floppy.
> kmod: failed to exec /sbin/modprobe -s -k block-major-2, errno = 2
> VFS: Cannot open root device "" or 02:00
> Please append a correct "root=" boot option
> Kernel panic: VFS: Unable to mount root fs on 02:00


You might need to specify the kernel bootline options from yamon correctly.
Perhaps you are missing the "root=/dev/nfs" option.

Something like
go . nfsroot=a.b.c.d:/mnt/rootfs root=/dev/nfs

should do the trick.

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