Nobin, On Thursday 21 June 2007 07:33, Nobin Mathew wrote: > Is there any problem with 512 page NAND devices. 2K page > devices are working fine. > > When I mount the file system I am getting only lost+found > > any ideas why? During the 2.6.17 to 2.6.18 period, MTD's API was changed. Does your version of MTD have functions nand_read_oob() and nand_write_oob() in drivers/mtd/nand/nand_base.c? Please provide more details. Are there 'objNNNN' files in lost+found? Do you get any diagnostics from Yaffs during mount? -imcd