Hi Kelvin,
On 1 April 2014 15:48, kelvin <qyq1226@gmail.com> wrote:
> Hello.
> When I go to the last step:
> mount -t yaffs2 /dev/mtd0 /mnt
> There is a error:
> mount: /dev/mtd0 is not a block device
>
> I want to known what is wrong.

The Linux YAFFS filesystem interface works on the block MTD devices,
not the character ones. /dev/mtdX are the character devices,
/dev/mtdblockX are the block devices. So you probably want:
mount -t yaffs2 /dev/mtdblock0 /mnt

Regards,
Andre