I have an disk image with 3 partitions: first partition (hd0,0) is boot-able with GRUB1 with the following configuration GRUB file:

default=0
timeout=5
title Bank A
        root (hd0,1)
        chainloader +1

title Bank B
        root (hd0,2)
        chainloader +1

The partitions (hd0,1) and (hd0,2) are also boot-able. I'm trying to clone partition (hd0,1) to (hd0,2) by creating device map using kpartx and copying whole partition using dd command.

The problem is: after partition cloning, the cloned partition did not boot (but all files are OK). What the wrong?

I need both partitions to bee identical (I'm using them for fail-over purposes into embedded device)