This process is called a clean install, which is ironic as there's nothing particularly clean about it: Microsoft has enshittified Windows Setup.
XDA Developers on MSN
I installed Windows on a flash drive and it ran fine
Windows To Go is still an option, if you know where to look ...
If you want to download Windows 7 ISO file for free and install it on your system or install it as a virtual machine via VirtualBox or any other virtualization software, you can download it by using ...
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