Mcpx_1.0.bin, Xbox_hdd.qcow2, Complex_4627.bin, Complex_4627v1.03.bin 'link' -

This is the Hard Disk Image . Unlike a real physical drive, this is a virtual disk file (in QCOW2 format). It contains the Xbox file system where save games, dashboards, and system data live. The Story: Bringing the Machine to Life

It contains the secret "handshake" that verifies the BIOS authenticity. xbox_hdd.qcow2 This is the Hard Disk Image