# Add the ubi.mtd=X parameter to the kernel command line, where X is the number of the mtd partition

# Erase the MTD partition:

flash_eraseall /dev/mtdX

# As an alternative to point 1, launch the following command:

ubiattach /dev/ubi_ctrl -m X

# The device /dev/ubi0 is now available. To create the UBI volume, launch the following command (-N sets the name and -s sets the size of the volume):

ubimkvol /dev/ubi0 -N rootfs -s 128MiB

# The device /dev/ubi0_0 is now available and can be mounted with one of the following comands:

mount -t ubifs ubi0_0 /mnt/ubifs

mount -t ubifs ubi0:rootfs /mnt/ubifs

# To mount the UBI file system as root file system, the binding between MTD and UBI must be specified from the kernel command line, adding the following parameters:

ubi.mtd=6 root=ubi0_0 rootfstype=ubifs rw

Please note that