Hi list, I found mkyaffs is broken on 2.6.18, here is the log on my side, =================== root:~> uname -a Linux 2.6.18-ADI-2007R1-pre #34 Mon Nov 20 18:23:11 CST 2006 blackfin unknown root:~> cat /proc/mtd dev: size erasesize name mtd0: 00800000 00001000 "ROMfs" mtd1: 00400000 00020000 "linux kernel" mtd2: 04000000 00020000 "file system" root:~> mkyaffs -e /dev/mtd1 argc 3 sh 0 optcnt 2 MEMSETOOBSEL: Inappropriate ioctl for device root:~> =================== Did I miss anything? -Aubrey