Several operating systems can be installed on a single disk.
Several operating systems can be installed on a single disk.
You're considering using a 32GB USB for multiple OS installers. For older systems without GPT support, you can install Windows 10 x64 either on MBR or GPT with Ubuntu Live Disk. If you're on a non-UEFI system, you might need to use Grub4DOS or YUMI to manage the boot process. It depends on whether you want both Windows versions installed or just one GPT variant for Grub handling.
Absolutely, you're right about the challenges with MBR and GPT together. Since Microsoft's bootloader only supports Windows, you'd need a third-party option. I’d suggest Clover—it works across all operating systems, including macOS, offers a much better interface than Grub4DOS, and it’s fully customizable.