How can i do temporary disc encryption ?

I will be having movers haul my stuff across the USA in a couple of months, including my desktop PC (I will be flying to my new destination). All but one of my drives are SSD so small physically. I am wondering about ways to harden my drives temporarily during the move just in case it was stolen or compromised for identity and financial data theft? I will use a strong BIOS password but that can easily be circumvented through a BIOS reset on the motherboard. I plan to back up all my data as well as a system image to an external drive to send to my brother prior to the move. I am thinking I should bring my SSD drives along with my carry-on baggage, although if I could have them secure I might keep them with my PC.

Question: Is there a way to super harden or encrypt my existing drives should the worst happen, viz should my PC be stolen or compromised by movers? And then once I get my PC at my destination and set it up in a house I will rent, could I then disable/remove the encryption (or perhaps leave it active but not if it slows down the drives-- drive speed is very important for my needs).

Layback Bear said:

...Moving is enough of a hassle as it is ....

You have that right. 20 years of accumulating possessions in a house, trying to downsize, then paying out the nose to have movers move me from the midwest to the coast, sigh. Never moved more than a couple of hours to a new destination before, this is very stressful. To add PC security on top of it all is another stress! But having identity theft or my financial accounts drained from a bad buy mover would be horrible.