I've never had to do this before but my little test server has a two tiny hard drives in it.. One's starting to fill up so I'd like to span the hard drives to make one large volume.
size really shouldn't matter to transfer the data to a bigger drive jsut make sure you have a back-up a good one if something does go wrong. Or yopu could back it all up and out it on the new hdd?
I think you're not really understand what I want to do... Right now I have 2 hard drives... One is 10GB, the other is 15GB.
So right now it looks like this:
HD1 HD2
|------| |------|
I want to combine them to make one large linux partition
HD1&HD2
|---------------|
This can be done in windows quite easily using dynamic volumes and creating a spanned partition, but it seems more difficult in Linux because the only way I've found to do it is by using a RAID array.