no DVD burner

[jayspame at comcast.net]

Hi

I've got YDL 3 and I want to upgrade to 5.  I don't have a DVD burner and I'm, shall we say, pecuniarily challenged.

Can I "burn" the DVD image to a flash drive and boot up from that?  Anybody know how to do it?  How about on an unused hard drive or partition?  It seems like this should be possible.

Alternatively, is it possible to use yum or apt to upgrade from 3 to 5?  I ran yum upgrade and got all my vers. 3 packages updated but I don't see how to update to a new level.  Is this possible?

Thanks!
Jim