I use cp command, the result is same cp ./zbarebox.bin /dev/nor0.root md -s /dev/nor0.root 00000000: ffffffff ffffffff ffffffff ffffffff ................ 00000010: ffffffff ffffffff ffffffff ffffffff ................ 00000020: ffffffff ffffffff ffffffff ffffffff ................ ls /dev/nor0.* -l crw------- 4849664 /dev/nor0.root crw------- 3145728 /dev/nor0.kernel crw------- 131072 /dev/nor0.bareboxenv crw------- 262144 /dev/nor0.barebox My flash write OK in u-boot -- Best Regards, zzs _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox