Publish rootfs for MyBook Live target

Dear All,

Is it possible to publish the rootfs image separately for target MyBook Live Single/Duo (apm821xx/sata), as for the x86 target, please?

It would be much easier to perform upgrades (e.g. in case the rootfs size has been changed). I know, I can build the combined image with any rootfs size to my own taste, but it would be easier to upgrade without making my own image.

Thank you!