I recently decided to take apart a really old HP desktop and discovered it had a nice, aftermarket hard drive in it. This computer hasn't been used for years, so it was fine to take things out of it. The hard drive it had was a 500GB, 7200 RPM Seagate. I installed it into my computer, and for some reason, it showed up as two drives. One was the drive that ran Windows on the old computer, and one was a backup drive. I formatted both, and still the same. They show up as two drives, one 377 GB and one 88 GB, even though it should be one 465 GB (formatting). I have a picture of how the drives show up after formatting.