Hi,
2009/2/6 Steve Fosdick lists@pelvoux.nildram.co.uk:
on re-installing. I'd make sure I had the encryption key written down and a note of the partitions that should not be reformatted before you do the mainboard swap so that if you swap and it won't boot you don't
Yes, a very good idea might be to print out the output of fdisk -l /dev/<your disk>, so you can recover your partitions later. Or dd the first 512 bytes of the disk to a file and put it on a pen drive etc.
(this might be good practice, in general)
Or just dd the whole drive to another machine as a backup copy, then you can play with the reinstall as much as you like.
Srdjan