I've finally sifted through my config issues and now have a working P2 NAND driver. I'm trying to get yaffs to work 2.6.11 kernel. When I try to mount a file system I get / # mount -t yaffs2 /dev/mtdblock/4 /tmp/p4 yaffs: dev is 32505860 name is "(unavailable)" yaffs_read_super: Using yaffs2 yaffs_read_super: MTD block size 4096 yaffs: yaffs_GutsInitialise() yaffs: NAND geometry problems: chunk size 1, type is yaffs yaffs_read_super: guts initialised FAILED mount: permission denied. (are you root?) I am able to mount jffs2 file systems on the same partition. Before I dive into this, is there something obvious I'm doing wrong? Thanks, Marty