The WD one is connected to the SATA1 (SATA III) port on my MSI. My DVD drive is connected to SATA2 (SATA III). And my Seagate is on another computer with an Asrock H61-VS3 (SATA II only).
Also, the saturating part confuses me. And apparently, the boot speed is now stucking at 11 seconds. Plz help