VFS: Cannot open root device "mtdblock2" or unknown-block(31,2)

     VFS: Cannot open root device "mtdblock2" or unknown-block(31,2)                
Please append a correct "root=" boot option; here are the available partitions:
1f00             256 mtdblock0 (driver?)                                       
1f01            3072 mtdblock1 (driver?)                                       
1f02          257024 mtdblock2 (driver?)                                       
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,2)
[<c00349a8>] (unwind_backtrace+0x0/0xdc) from [<c02f3ec0>] (panic+0x34/0x128)  
[<c02f3ec0>] (panic+0x34/0x128) from [<c000908c>] (mount_block_root+0x1d4/0x21c)
[<c000908c>] (mount_block_root+0x1d4/0x21c) from [<c000933c>] (prepare_namespac)
[<c000933c>] (prepare_namespace+0x164/0x1c8) from [<c00085c4>] (kernel_init+0xd)
[<c00085c4>] (kernel_init+0xd8/0x110) from [<c002fed8>] (kernel_thread_exit+0x0)

 

重新写一遍根文件系统即可~~

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