Setting up is the single most technical step in emulating the original Xbox. Unlike Dolphin (GameCube/Wii) or PCSX2 (PS2), Xemu relies heavily on low-level hardware emulation, making the BIOS non-optional.
: If your dump has an MD5 starting with 196a... , it is likely a bad dump and will not function correctly. Hard Disk Image (HDD): Xbox Bios Files For Xemu