Solved Two boot menus BIOS and UEFI

[Steve2926]

Place UEFI only Isos in /UEFI/ and set root folder. for efi to same folder
For legacy Isos, put in/legacy/ folder and set root to same folder
If some Isos work in both, make two copies of that iso

Or, simply rename your Isos e.g. ubuntux86_uefi-only.iso or use folder names like /iso/uefi-only/ and /iso/legacy-only/