Next time this happens and you're moments away from getting caught just unscrew the HDD and destroy the HDD platter with a hammer. It's made of glass so it'll break quite easily. The FBI couldn't get anything out of Adam Lanza's drive and all he did was scratch it with a screwdriver. They will 100% ask why you destroyed the HDD, just ask for a lawyer and plead the fifth.

It's either this or get gangraped by mexicans in jail