Five-year old XPS 435 came with two 750 GB drives running Raid 1 (mirror). One drive failed and I replaced it with a 2 TB. Other drive failed and I replaced it with a 2 TB. Intel Rapid Storage Technology sees both 2 TB drives. My computer thinks it still has the 750 GB drives. Ran all Dell recommended updates (e.g. BIOS).
Also, been getting the blue screen of death lately with a display driver reset failure. Updated driver but did not help. Time for a new video card?
Thanks, CH