Hi : There is a problem when I use "nandwrite" to write yaffs2 root file system into nand flash. Here is my procedure : 1. Use mkyaffs2image to make yaffs2 image ./mkyaffs2image ../build/fs/ rootfs.bin 2. Erase nand flash & write image flash_eraseall /dev/mtd3 nandwrite -a -p /dev/mtd3 /mnt/rootfs.bin 3. Mount nand flash to check mount -t yaffs2 /dev/mtdblock3 /tmp There is nothing except lost+found in /tmp. But if I first mount the nand flash and then write file system in it, it would be O.K. ¡@¡@¡@¡@ mount -t yaffs2 /dev/mtdblock3 /tmp cd /tmp tar -xzf /mnt/rootfs.tar.gz Is there any problem in my rootfs image or use wrong arguments when using nandwrite ? ¡@ Thanks, George Kang -- Open WebMail Project (http://openwebmail.org)