Sorry for the long post, I want to give as much details as possible!
I have 2 HDDs in my PC:
Disk 1 - WD10JPVX - 1TB 2.5" 5400rpm internal HDD (been using this in my laptop for 5+ years, now using in my new PC for 5+ months)
Disk 2 - ED40EZAZ - 4TB 3.5" 5400rpm internal HDD (bought...