virtual machine - How to triple-boot Windows 95, 98 and ME in a VM? - Super User
Triple boot macOS High Sierra, Linux Mint, and Windows with rEFInd - Ask Different
Restore Missing Dual / Triple Boot Menu in Ubuntu 18.04 – UbuntuHandbook
GitHub - nonkronk/tripleboot-clover: All necessary files in EFI partition to get Mac OS X (Hackintosh) + Kali Linux (without GRUB) + Windows triple- boot working in single HDD/SSD with Clover Bootloader.
Quick and Easy Triple boot: Windows 7, RedHat 6.2, Ubuntu 12.04