quietHDD – Make your HDD quiet when working with SSD or another HDD

If your laptop has both HDD and SSD installed at the same time (for example: use SSD to load and run the operating system, yet use HDD for storage purpose), then you've probably encountered and endured the bother that HDD makes a clatter every few seconds (that's usually 1, 3, or 10 seconds). Especially if you're using Western Digital, Seagate or Hitachi's hard drive products.