i have write a rootfs.cramfs to mtdblock2, and if i use nfsroot, and can mount /dev/mtdblock2 correctly.but if i use /dev/mtdblock2 as rootfs with bootargs "root/dev/mtdblock2 rootfstype=cramfs" the kernel output next messages .... VFS: Mounted root (cramfs filesystem) readonly. Freeing unused kernel memory: 144k freed Error -3 while decompressing! 805bf6a8(-2046512)->81218000(4096) Error -3 while decompressing! 803cc4fc(26)->8121e000(4096) Error -3 while decompressing! 803cc516(26)->8121f000(4096) Error -3 while decompressing! 803cc530(26)->803a0000(4096) .... my kernel version is 2.6.14, flash is SST39VF3201, nor flash, 4M Byte does anyone have idea about this situation? thanks for any hints Best Regards zhuzhenhua