Transferring HDD to new laptop

[meckstroth14]

So it was time to replace my 4 year old laptop with a new one for school and gaming when i'm not at home as I use my desktop for gaming when at home. Anyways, I settled for a nice $850 dell laptop that comes with a 256 GB SSD and I was wondering how I would go about transferring my 750 GB HDD from my old laptop to the new laptop to use as a secondary drive. How can I wipe everything from it? I know how to install it and everything but is there anything special I need to do before I install it?

 

[IDProG]

To be able to install secondary HDD, your laptop must meet either one of these requirements:
1) Your laptop has 2 2.5" drive slot
2) Your laptop has 1 2.5" drive slot and the SSD is M.2

 

[meckstroth14]

To be able to install secondary HDD, your laptop must meet either one of these requirements:
1) Your laptop has 2 2.5" drive slot
2) Your laptop has 1 2.5" drive slot and the SSD is M.2

This is the laptop I got: https://www.amazon.com/gp/product/B015PYYDMQ/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

It has the second option. The SSD is installed in the M.2 slot according to the answered questions.

 

[IDProG]

https://youtu.be/r_8yFIYxP4s
A review of your laptop.

 

[meckstroth14]

https://youtu.be/r_8yFIYxP4s
A review of your laptop.

Ok, but my question is how do I wipe my harddrive before transferring it to my new laptop. I still want my games and windows on the SSD but i'm just transferring toe HDD for extra storage. Won't it cause problems if I leave the OS from my old laptop on the HDD?