@cyrus The functionality in Ventoy is pretty close to one-of-a-kind. You can kind of mimic it with GRUB though. There's also a tool called Glim (https://github.com/thias/glim) that apparently makes setting up GRUB in this fashion easy. I haven't audited the code and can't vouch for its safety, but it might be worth looking at.
@arraybolt3 I mean...Ventoy is based on GRUB2 soo... :blobcatthinkingglare: