Yi, On 3/9/07, yi zhang wrote: > My system was based on PXA270£¬consists of > linux2.6.9 + intel patches + cramfs +¡¡yaffs, > nandflash was samsung K9F1208, 64M. and this chip was mounted as 3 yaffs > partitions, After a period of usage of this system, there may appear a lot > of badblocks,we can see the badblock messages in the kernel booting > messages, and sometime one of the 3 partitions could be damaged entirely. > the partitons which marked as badblocks cannot be erased by the 'mkyaffs' > tool.when this occurs, the worst way is that the nandflash chip could be > changed to another nandflash chip. can you please try testing on a bare (i.e. freshly-erased) partition? So, not to bring possible mkyaffs problems in -- to locate the kernel problems first? I'd expect that the problem is yaffs2 rewrites bad block marker in OOB. Is this chip a 512b page or 2k page? Vitaly