How to reinstall Windows?

[WhatComesAround]

Hey everyone, so I have my ryzen parts ready for the swap, and I will be reusing everything other than well the new parts (CPU, motherboard and ram). I have two HDDs, one Seagate 500GB (slower HDD), and a 2TB WD Black HDD (Preferred). I have my OS on the Seagate drive. I have never installed an OS on already populated drives so here is what I think I have to do? Please correct me if I am wrong. 

- Rebuild PC with new parts

- Have the WD drive installed with an empty partition

- Plug in a USB with a free copy of Windows 10 installed

- Install OS on the empty partition

- Log into windows account to activate windows

- Restart PC with the Seagate drive installed

- Reformat the drive

Is this correct?

[Slottr]

You should really spend 20$ on an SSD.

 

Just plug in all the drives at once and wipe them in the windows ISO

[WhatComesAround]

Just now, Slottr said:

You should really spend 20$ on an SSD.

 

Just plug in all the drives at once and wipe them in the windows ISO

I would if I could, will be starting to work part time sometime soon so maybe an SSD will be possible in the future. How much space would I need for an OS drive? Is 120GB plenty?

[Slottr]

26 minutes ago, WhatComesAround said:

I would if I could, will be starting to work part time sometime soon so maybe an SSD will be possible in the future. How much space would I need for an OS drive? Is 120GB plenty?

Operating system and a few programs will fit fine on a 120gb drive

[asand1]

You really don't need to reinstall. Windows 10 will detect hardare and download drivers. You can also run the installer to "repair" your installation.