I've recently installed Fedora 32 onto what was a Windows machine. This is my first linux machine, and it's really fun.
The thing that's been irritating me is that when I power up the computer, it asks me (momentarily) to select which OS I'd like to boot into. Oddly enough there are 2 or 3 Fedora options and 1 Windows option, with something about it being on /dev/sda1?
Either way, I'd really like it if it only had one option to boot into, and didn't give me the screen to select even though it does choose the correct one after a few seconds. First question: is this possible? And second how can I ensure that there is only one OS to boot into and the rest are now deleted from the machine?
From remove windows recovery option from grub menu on fedora? it seems I can remove a
/boot/grub2/grub.cfg, but I'm not entirely sure what this does, so some more information here would be helpful.