Hello, I have a custom build PC that I have been using for a couple of years now. The 500GB HDD that I initially installed only has about 25GB of free space left on it. I am wondering if I can install a new HDD in a RAID setup so that the computer reads the drives as a single drive without losing any information on the current HDD. Essentially, I just want to add more GB to the existing drive. However, I would like for them to read as a single drive. It would just make it easier when saving and loading data. If I cannot do this, can I add a second HDD as a seperate letter and still keep the current drive in its current state? Finally, whatever the choices I have, how would I go about doing whatever option is viable; i.e. BIOS settings, initial setup, etc. Thanks for your help in advance!