[SLUG] clone non-LVM system onto new LVM drive

[david <david@xxxxxxxxxxxxx>]

Scenario:

* Ubuntu presently installed *without* LVM.
* New hard drive formatted with:
   /boot ext3 partition (empty so far)
   LVM group containing ext3 LV

I want to copy the original root partition onto the new LV so that the 
new hard drive and LV is a bootable clone, and the old physical drive 
can be removed/saved.

There are three objectives:
 Convert to LVM
 Keep the original as backup
 Upgrade the LVM version and be able to roll back if necessary.

I'm assuming that I will have to boot into a live CD and dd the original 
root partition onto an LV. How do I persuade this to boot correctly? Do 
I copy the original /boot onto the new boot partition? Do I have to make 
changes to the boot directory? Changes to grub? Then what? (apart from 
any BIOS changes, which are fairly obvious).

So far I haven't been able to find the right question to ask Google. Any 
 help would be appreciated, of if anyone could point me at a howto that 
covers this scenario.

thanks

David.