As the title suggests, my brother's first gen MBA bit the dust. Well he's getting the grey screen. He took it to the Apple Store and they say he needs a new HDD. He said he read where others are having this problem and I told him I'd swing by and take a look at it. My question is this: is it possible for me to restore his MBA using the flash drive I got with my new (2011) MBA? I should note that he threw his box, documentation, USB restore, etc. out. And if I am able, would he lose anything on his current HDD?