@firefoxx04:
Nothing to hide? Then give me access to your email box, regular mail, phone network ID and all your social media accounts. Also give me access to your medical and banking records. I hope you don't mind me listening in on your discussions with your wife, either electronically or in person, sitting in between you two. Let me see your pictures. I also hope you don't own any illegal software, music or other media files, including Youtube videos in your browser cache; no unpaid pornography, and no pornography – not even a thumbnail or spam banner – that might have a teenager in it, whether you know it or not; and I hope you never discussed strong disapproval with the government, evading taxes, traffic violations, drugs or who ought to get their ass kicked.
If someone has access to everything you ever said, wrote or even merily suggested, it's going to be trivial to come up with a crime you're guilty of.
The government is the servant of the people, and has no business invading their lives.
Besides, even if you'd keep confidential data on an external disk, you're going to have to plug it in sometime to read its contents – not mentioning the physical disk itself can be confiscated.
My point being, there is no way to safeguard your private data against the goverment, apart from the principle that it should not have the right to get that data in the first place. If you accept that they do have that right to obtain all that data and accept that they are actively trying to, you've lost. "Nothing to hide" is a straw man. People have a right to their own private lives without having to assert not being a terrorist or criminal.