Multiboot: BIOS+MBR vs UEFI + GTP

Acronyms:

• BIOS: Basic Input Output System
• UEFI: Unified Extensible Firmware Interface
• MBR: Master boot record
• GPT: Globally Unique Identifier Partition Table = GUID Partition Table

Check if your OS is using UEFI or BIOS

For Windows: You can check via msinfo32 (System information). For more read this article

For Linux you can use the following command:

[ -d /sys/firmware/efi ] && echo UEFI || echo BIOS

Multiboot configuration

The most effective combinations are either BIOS+MBR or UEFI+GPT. You could go around that, but it is not recommended at all.

The most compatible combination is

UEFI + GPT + Fast startup disabled + Secure boot disabled

MBR vs GPT partitioning scheme