Backing up Device FW

For Developers
#1

I have a OpenWRT device that I'm wanting to backup the partitions to see if I can make any customization or enhancements.

I followed https://openwrt.org/docs/guide-user/installation/generic.backup, however, I have two partitions that seem to not want to let me copy data from them.


Backing up mtd14 (log_data)
dd: can't open '/dev/mtd14ro': Resource busy

Backing up mtd16 (rootfs_data)
dd: can't open '/dev/mtd16ro': Resource busy

Not too worried about mtd14, but I'm assuming mtd16 is where the fun items are. What would be the best way to copy this out?

#2

You can either extract it in uBoot, if your uboot has that function, or boot from an initramfs image and try from there.