Hi all,
I'm currently using Zorin OS, but I'd like to perhaps explore other Linux distributions. Is it possible to dual-boot another distro, and then if I'm satisfied and after having installed all the apps I need, to erase my Zorin OS partition and only use the other, new distro?
yes, no problem at all. as long as you're careful about partitioning when you're installing the second distro (it should be able to do that automatically, if not, you'll need to identify the EFI partition manually) it won't be a problem. you can afterwards just remove the distro you no longer want. after that, you just gotta update grub so it can remove the no longer existant from it's os table and you're good to go again.