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Old 08-07-2004, 12:24 AM   #1
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Registered: Aug 2004
Posts: 12

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Root-NFS: Server returned error -13 while mounting

I struggle for booting linux in arm developing board recently, now I meet another problem,

<5>Sending DHCP requests .<6>eth0: link up, 100Mbps, full-duplex, lpa 0x45E1.., OK
IP-Config: Got DHCP answer from, my address is
IP-Config: Complete:
device=eth0, addr=, mask=, gw=,
host=arm_920TDI, domain=, nis-domain=(none),
bootserver=, rootserver=, rootpath=/home/wuliyu/eldk/
<5>Looking up port of RPC 100003/2 on
<5>Looking up port of RPC 100005/1 on
<3>Root-NFS: Server returned error -13 while mounting /home/wuliyu/arm_920TDI
<3>VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" or unknown-block(2,0)
Please append a correct "root=" boot option
<0>Kernel panic: VFS: Unable to mount root fs on unknown-block(2,0)
<6>eth0: link down

I have read the kernel source code, when the function nfsroot_mount() return value<0, it will report "Root-NFS:server returned error", "mount_clnt.c" give the defination of nfsroot_mount(), it seems like rpc_call error, but I don't know the right reason, Any one can help me?
Thanks for any suggest!

Last edited by liyuheu; 08-07-2004 at 12:55 AM.
Old 08-07-2004, 03:31 PM   #2
Registered: Dec 2003
Distribution: Suse 8.2
Posts: 48

Rep: Reputation: 15
try to add that dir to /etc/exports .... im strugling with ltsp now and i saw this error on ltsp troubleshooting :P
Old 08-07-2004, 08:49 PM   #3
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Registered: Aug 2004
Posts: 12

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Thanks for your advice!
I have resolved it! I am closing in upon success!


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