I'm trying to adopt some best-practices (or at least less-bad-practices) with my external data storage. I'm looking for a way to quickly provide some minimal level of protection from prying eyes for ~4tb of data (2tb of data mirrored on two external drives).
The kicker here is that I will frequently want to use these with a PS3. If this were PC only, I could run some whole disk encryption and, from what I understand, it could take many hours (or several days) to encrypt 2tb of data. But, I'll need to decrypt it before I can use it with the PS3. I'm looking for a solution that takes less than 10minutes to enable and 10 minutes to disable. Ideally, 1-2 minutes.
Most of the data isn't very confidential - every DVD/CD/PC game I've ever purchased is on there. Lots and lots of mostly boring, high res pictures and boring home videos. My important bank/tax/work documents are encrypted properly on the disks, but I'll be doing a lot of travelling in the near future and I'll want to bring one of these disks with me. I'll also be spending time with roommates/acquaintances (think couch surfing) where I'll have my disks around people I don't have a great deal of trust with.
Could someone suggest something? Is there a way to just encrypt the file system metadata (and not the contents of the file) so that the drive appears unformatted or some other such measure?