XTIDE Universal BIOS is described as 'makes it possible to use modern large ATA hard disks or Compact Flash cards on old PC's. You can then enjoy quiet or noiseless drives with more capacity than you'll ever need for old computers' and is an app in the OS & Utilities category. There are five alternatives to XTIDE Universal BIOS for Linux, Mac, Windows, BSD and Haiku. The best alternative is coreboot, which is both free and Open Source. Other great apps like XTIDE Universal BIOS are Libreboot (Free, Open Source), SeaBios (Free, Open Source), petitboot (Free, Open Source) and U-Boot (Free).
coreboot (formerly known as LinuxBIOS) is a free software project aimed at replacing the proprietary BIOS firmware found in most computers with a lightweight system designed to perform only the minimum of tasks necessary to load and run a modern 32-bit or 64-bit operating system.