Hi Charles, In function yaffs_CalcCheckpointBlocksRequired, I see the following remark: /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ I want to use yaffs over NOR device. Since NOR devices don't have bad blocks, will it be OK if I will not add those 2 blocks (to save space on my yaffs partition)? Thanks ------------------------------------------------------------------------- Amir Comforti Zoran Microelectronics Ltd Phone: +972 4 8546310 Email: amir.comforti@zoran.com Web: www.zoran.com -------------------------------------------------------------------------