If there were some addresses that weren't lost by the drive, then you should be able to sign them, right?
What happened to the coins is irrelevant. As long as we have a tx history and a signed message we know the circulation of BTC.
Don't you see all of my private key were in a single drive which I used mostly. Also just to let you know, price of BTC were pretty low at the time I was holding large amounts of it.
Please stop trying to juggle me in this questions, I am not here to get into this investigation. I have already confirmed my issue and its very genuine to anyone. Also I have reported a PM confirming my email id from 2012 to Global Moderator.