<p dir="ltr">you want to upgrade. seems to me the easiest, quickest, and most trustworthy way to proceed is reinstall.</p>
<p dir="ltr">experience taught me long ago reinstalling is your friend, far easier than sorting out a confusing mess. also, many major upgrades haven't worked properly without reinstalling. sometimes raid formats have changed, sometimes the upgrade process just leaves a nonworking mess and you need to reinstall anyway.</p>
<p dir="ltr">and while you're at it setup your discs so you have 2 complete and distinct installations simultaneously. that way the next time around you can install the next before/without overwriting what's working.</p>
<p dir="ltr">it's easiest to use the installer to do your partitioning.</p>
<p dir="ltr">i have 2 discs and build raid1 sets by setting the 2 discs up with identical partitions, on each disc i put two 300mb boot partitions, two 10gig swap partitions, and the rest of the space equally divided between two lvm partitions.</p>
<p dir="ltr">the swap could be within the lvm, but there have been times i've been happy to have partitions i could play with without destroying either installation. if you want more swap later you can add additional swap from within the lvm.</p>
<p dir="ltr">you can even change your mind later about having 2 sets and absorb the second lvm into the first. just like you can add more salt later but you can't take out what's already in the stew.</p>