How to replace HDD with SSD, then use the HDD as a 2nd drive
To replace your laptop's HDD with a SSD, and use the original HDD as a second drive will depend on what type of laptop you have. We will break this down to four general laptop categories:1) Laptop with a main/primary HDD and a fixed Optical Drive
1) Laptop with a main/primary HDD and a Fixed Optical Drive
These are laptops that have Optical Drives that are not easily swappable/removable. For some of these laptops it may just be as simple as removing a screw from the bottom of the laptop to slide the optical drive out. For others you may have to remove the keyboard, or partially disassemble the laptop to remove the optical drive. This scenario is often found in laptops that come from the factory with a slot-loading (as opposed to tray-loading) optical drive like those found on the Apple MacBook, MacBook Pro laptops and the DELL Studio 15 Series laptops.
2) Laptop with a main/primary HDD and a removable/swappable Optical Drive
These are laptops that have multi-function optical drive bays such as the DELL Modular-Bay, DELL Media-Bay, HP Upgrade Bay, HP MultiBay, and Lenovo UltraBay. These laptops with these special mutlti-function bays were designed to have their optical drives easily removable. Some examples of these laptops are the DELL Latitude E6400 & E6500 and the HP Elitebooks & HP-Compaq Notebook PCs.
3) Laptop with two internal HDD bays
These are laptops that have two internal HDD bays and an optical drive. A large number of laptops that have a screen size of 17-inch or larger have two internal HDD bays such as the HP Pavillion dv7, DELL Studio 17, HP Envy 17 and DELL Inpsiron 1720. Most of these laptops come from the manufacturer with only one HDD installed and an empty 2nd HDD bay.
4) Laptop with a main/primary HDD and no Optical Drive
These are small, sub-notebook laptops. Unfortunately, there is no room in these laptops for two drives. Therefore you can't have a secondary drive.