Related Bugs:
Bug #1898749, "Pop!_OS expects vmlinuz on the iso to have the *.efi extension." Bug #1895770, "Pop!_OS expects the initramfs bootstrap file to be explicitly named "initrd.gz"
Related Bugs:
Bug #1898749, "Pop!_OS expects vmlinuz on the iso to have the *.efi extension."
Bug #1895770, "Pop!_OS expects the initramfs bootstrap file to be explicitly named "initrd.gz"