Hi: I have a problem : when my kernel mount the rootfs (yaffs 1 ),there are many yaffs ecc error: [42949455.170000] **>>yaffs ecc error unfixed on chunk 1741:0 [42949455.180000] **>>yaffs ecc error unfixed on chunk 1741:1 [42949455.180000] **>>Block 54 marked for retirement [42949455.190000] **>>yaffs ecc error unfixed on chunk 1742:0 [42949455.190000] **>>yaffs ecc error unfixed on chunk 1742:1 [42949455.200000] **>>Block 54 marked for retirement [42949455.200000] **>>yaffs ecc error unfixed on chunk 1743:0 [42949455.210000] **>>yaffs ecc error unfixed on chunk 1743:1 [42949455.210000] **>>Block 54 marked for retirement [42949455.220000] **>>yaffs ecc error unfixed on chunk 1744:0 [42949455.230000] **>>Block 54 marked for retirement [42949455.230000] **>>yaffs ecc error unfixed on chunk 1745:0 [42949455.240000] **>>yaffs ecc error unfixed on chunk 1745:1 [42949455.240000] **>>Block 54 marked for retirement ..................... this error message is printed by yaffs_ReadChunkFromNAND(yaffs_tagscompat.c) ,yaffs_Scan call this function. I mount the root as yaffs ( my flash chip is 512B page ,kernel 2.6.12,yaffs2 source ), so I think whether yaffs1 tag compatible with the yaffs2 cource I use?