I tried with a zImage, here is what I'm getting : barebox:/ bootz /dev/nand0.kernel.bb invalid magic 0x00002018 And here the ls -l /dev/nand0.* output : barebox:/ ls -l /dev/nand0.* crw------- 393216 /dev/nand0.barebox.bb crw------- 131072 /dev/nand0.bareboxenv.bb crw------- 2883584 /dev/nand0.kernel.bb crw------- 533200896 /dev/nand0.root.bb crw------- 533667840 /dev/nand0.root crw------- 2764800 /dev/nand0.kernel crw------- 131072 /dev/nand0.bareboxenv crw------- 307200 /dev/nand0.barebox Here is how I did my kernel and root partitions, following this steps : addpart /dev/nand0 300k(barebox)ro,128k(bareboxenv),2700k(kernel),-(root) nand -a /dev/nand0.* update -t kernel -d nand update -t rootfs -d nand Is there any specific command to erase the nand before flashing it ? 2011/10/18 Sascha Hauer > On Mon, Oct 17, 2011 at 10:31:38PM +0200, Kamel BOUHARA wrote: > > > bootu is for starting raw kernel images. Do you have such an image? > > > Normally you have an uImage (bootm) or a zImage (bootz) > > > > > > Ok so that maybe the solution because I didn't tried with the bootm .... > my > > bad ! But why did I don't have the "Bad magic number" error like when I > > tried the boot command ??? > > A raw image does not have any magic number you could check, so the bootu > command relies on the user passing the correct image. > > > > > Here is the ls /dev result: > > > > barebox:/ ls /dev/ > > zero defaultenv mem > > nor0 nand0 nand_oob0 > > ram0 phy0 self_raw > > self0 env_raw env0 > > nor0.barebox nor0.bareboxenv nor0.kernel > > nor0.root nand0.barebox nand0.bareboxenv > > nand0.kernel nand0.root nand0.root.bb > > nand0.kernel.bb nand0.bareboxenv.bb nand0.barebox.bb > > Sorry, I meant the output of 'ls -l /dev/nand0.*' to check the sizes of > your partitions. > > Sascha > > > -- > Pengutronix e.K. | | > Industrial Linux Solutions | http://www.pengutronix.de/ | > Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | > -- __________________________________ *Kamel BOUHARA* 7 rue Jules César 02100 SAINT-QUENTIN 06.17.83.29.04