I have seen question like this but the answers were not what I was looking for.
On my Ubuntu 18.04 laptop, I want to install windows back, as I got the laptop off of a friend that switched it from windows to Ubuntu. But for some reason when I am installing windows it says that the hard drive has to be formatted to NTFS for windows to be installed. How do I do this?
Edit: This is NOT a duplicate. The answers on other pages are not actually giving correct instruction on what I want to do. When I go into the windows installer by changing boot order in BIOS, I get to "Where should windows be installed?" But when I click on my hard drive it says that windows can be installed because it is not in the NTFS format. What I want to know is how to change my hard drive to this NTFS format so windows can be installed onto it.