Hi. I've not really used Windows since the early 2000. Even then not much.
I have a single mini PC with windows on. And use it only for device firmware updates. As a ham radio nerd. You get many devices that can only be modified via windows.
Anyway it was set up with dual boot the normal way. Windows first as it came with it. Then make a real Linux partition to use the PC on my boat while travelling.
Now the issue is I am upgrading the Mini PC. Basically replacing memory and the tiny 128gb ssd. So need to install it all from scratch.
I have order a copy of windows 11 from ebay. (At a price I consider acceptable for the crap)
But its going to take several days to arrive. And I would like to be more efficient.
So I am hoping folks can advice me on the best way to set up the PC with Linux first then install Windows 11 later. Knowing windows has a habit of messing up grub etc.
You can use windows in indefinite trial version with Activate Windows watermark.
Grab a windows iso from the website. Put it on USB stick (I use Ventoy). And install. I would keep windows bootlaoder and grub on separate partitions.