The console boots without needing a disc in the tray.
If you own a modded original Xbox with a modchip or a re-flashed TSOP, you have access to modern, feature-rich custom BIOSes designed to unlock the console's full potential. These are superior to the original 4627 BIOS for use on real hardware. xbox bios complex 4627 best
This topic cannot be covered without addressing the legal and safety aspects of using BIOS files. The console boots without needing a disc in the tray