For moving a system, I always use a Live CD to copy the data from the old to
new drive.

I get the new drive partitioned and formatted as needed, then copy the files
from the old drive to the new. Or archive to tar to an external HD.

Something like

tar -cvfp file.tar / /usr /home /etc

Then extract
tar -xvfp file.tar

You can restore grub from the live CD. If your live CD is the same as the
installed OS you could at this point chroot to the mounted drive and use
grub from the system...

chroot /mnt/new-disk
grub-install

Reading up on tar and grub and making sure you have a good reliable backup
highly recommended.

It's out of date, but http://www.tldp.org/HOWTO/Hard-Disk-Upgrade/ still has
some helpful info.

-- 
Andrew S. Zbikowski | http://andy.zibnet.us
IT Outhouse Blog Thing | http://www.itouthouse.com
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