OK first off, the way I understand how LVM works: LVM is basically a "software-type raid", where you take 2 physical drives and you group them together where they act as 1 drive alone. This will be a useful feature to me for my new linux machine I am building. I have a 120GB drive with data on it, mp3s and such... I just ordered another 160GB drive. So I have 2 drives but do not want 2 mounts on my linux box. I want to combine them and create one mount (ex. /archvie). To do this I use the GUI install and the LVM feature with Disk Druid, or whatever partition manager I choose. When I combine these drives. Will they have to be formatted? I do not want to loose all my data off my 120GB. I want to just add the 160GB on the the end of that. Is this possible, or is there a way to do it? Please people who know about this shed some light upon me.