How Can I Keep a Boot Menu for my Dual-Boot Windows and Linux PC?

It's great that you're experimenting with dual-booting! Just a heads up: Windows updates can sometimes erase GRUB and you'll boot straight into Windows again. Having a backup plan is smart—make sure you have a live USB to boot into Linux if needed, so you can repair or reinstall GRUB when necessary. It's definitely a good idea to prepare for that because it could happen down the road.

You changed the boot order, which is why you're skipping the choice menu. To fix this, you need to work with GRUB, the bootloader Linux uses. When you set up dual-booting, running the 'update-grub' command in Linux will scan for your other OS (like Windows) and create an entry for it in the boot menu. You can customize this behavior by editing the GRUB config file to set Windows as the default entry, but with a timeout to select Linux first. For a user-friendly approach, try using a tool called 'grub customizer' that gives you a graphical interface to do this without manual coding. Just be careful—the wrong edit can leave you with boot issues! You might want to do some research before making changes.

You can also try making Linux the default option in your BIOS settings. This should bring back the GRUB menu at startup. To change which option is the default in GRUB, edit the GRUB_DEFAULT in the /etc/default/grub file and then rebuild your GRUB configuration. This way, you can set it up exactly as you want.