使用JZ2440V2在做nandflash 的驱动程序时候，挂载网络根文件系统失败，我不明白跟随韦老师的二期驱动学习，挂接虚拟机（韦老师老师制作好的）文件系统（ mount -t nfs -o nolock,vers=2 192.168.1.105:/work/nfs_root /mnt 没问题）一直没问题，为什么一挂载根文件系统就出错？下面是出错问题图片，请老师指教一下，痛苦一天了。
虚拟机的 /work/nfs_root/ etc/ 里面的init.d rcS完全没有改动。
网络上说的有可能是金山卫士ARP的问题，可我的电脑是win7 64位的，貌似金山卫士里面没有ARP拦截服务
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Looking up port of RPC 100003/2 on192.168.1.105
Looking up port of RPC 100005/1 on192.168.1.105
r
PCBind: server 192.168.1.105 notresponding,
timed out
Root-NFS: Unable to get mountd port numberfrom server, using default
mount: server 192.168.1.105 not responding,timed out
Root-NFS: Server returned error -5 whilemounting /work/nfs_root/first_fs
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; here are the available partitions:
Kernel panic - not syncing: VFS: Unable tomount root fs on unknown-block(2,0)
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