How to install windows 10
Sais its just as easy as
1. Open GParted and resize your linux partition(s) in order to have at least 20Gb of free space.
2. Boot on the Windows installation DVD/USB and select "Unallocated space" to not override your linux partition(s).
3. Finally you have to boot on a Linux live DVD/USB to re-install Grub (the boot loader) as explained here.
For Debian 9.6 Stretch,
Is this all theres to flawless perfect or anyone have a better method or tips? Doing this at the moment, seems like fun, I dont want to mess anything up its my first time using 2 OS's, since I read that there is absolutely no reason not to as it just uses the 20GB block of space and thats it, no performance going down. I hope I dont bork the computer
Kyle Johnson commented
Thanks for sharing this step-by-step guide on installing Windows 10 alongside Linux. It's great that you're trying this out for the first time, and I'm sure you'll find it to be a fun experience. Just a tip, make sure to backup any important data before you start the installation process. I also use https://www.reddit.com/r/GetComputerHelp/comments/y17yo3/where_to_get_a_windows_10_key/ every time I need to reinstall the windows. I hope you find this alternative helpful as well