Universal Secure Boot bootloader?

[David Balažic]

Hi!

Is it possible to build a boot disk, that (using grub) loads anything,
yet works on Secure Boot enables systems?

Currently I have a utility USB drive, using grub legacy. Obviously, it
does not work on Secure boot enabled systems.

Is there a way to "fix" that?

I did a quick look at the grub bootloader used by ubuntu, but it only
loads signed kernels.

Is there a version that loads unsigned kernels?

The goal is to make a utility boot disk, that works on modern PC
computers (without turning Secure boot off on them).

Regards,
David