linux移植过程中提示：no filesystem could mount root，不知为何？

在移植过程step8的时候还没有烧文件系统所以没注意，今天把文件系统烧进去了，还是不行！

提示如下：No filesystem could mount root, tried:  vfat
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,2)
Backtrace:
[<c0028fd4>] (dump_backtrace+0x0/0x10c) from [<c0293164>] (dump_stack+0x18/0x1c)
r7:c38090bc r6:c03938a0 r5:c3809000 r4:c381df40
[<c029314c>] (dump_stack+0x0/0x1c) from [<c02931b4>] (panic+0x4c/0x124)
[<c0293168>] (panic+0x0/0x124) from [<c0008e90>] (mount_block_root+0x1d8/0x234)
r3:00000029 r2:c381df53 r1:c381df40 r0:c0319838
[<c0008cb8>] (mount_block_root+0x0/0x234) from [<c0008f9c>] (mount_root+0xb0/0xf4)
[<c0008eec>] (mount_root+0x0/0xf4) from [<c00090d8>] (prepare_namespace+0xf8/0x18c)
r7:c0393284 r6:c001e83c r5:c001e83c r4:c001e84c
[<c0008fe0>] (prepare_namespace+0x0/0x18c) from [<c0008478>] (kernel_init+0xc8/0xf4)
r7:00000000 r6:c001d678 r5:c001d320 r4:c001d678
[<c00083b0>] (kernel_init+0x0/0xf4) from [<c0039ee0>] (do_exit+0x0/0x620)
r7:00000000 r6:00000000 r5:00000000 r4:00000000

我分析原因：可能是前面的配置单没弄好（我是老老实实按照附录5来进行设置的，花了2个小时），但不知该如何进行深入的检查，以确定问题的根源，望高手指点具体的思路！

原因找到了：本以为附录5中所列出的配置单是最终的配置单，刚才才发现步骤8、9、12中还会对配置单进行修改，疏忽了！

2# symbupt


一步一步来嘛...