Recently I Attempted to upgrade my computers hard drive only to find that my 1tb western digital was doa I think. After ordering a 1st samsung internal I attempted to install a clean copy of lion again looked online and realized I had to do a trick to download lion again from the mac store so I did and since then I've been trying to burn lion to a DVD.... Well I failed three times and wasted 3 DVDs then I remember I had my friends old 27 gb external lol yah I know that tiny....it was actually the hard drive out of his old computer but anyways I tried burning lion to it and it worked!!!! After that I held the option button to boot from the big flash drive went to disk utility to format the 1 tb and then I installed lion.....it was a little fustrating but it worked and I'm happy hope someone else will benefit from this experience. Thanks Mac rumors