Something buggered up after my recent mac pro 1,1 upgrade to 10.7.4 from 10.6.8 which prevents me from booting my Win7 system. The Windows7 64bit is on its own hd and after getting the bootmgr missing msg I proceded to boot from my windows disc to repair. Now I managed to get to the system repair screen, although my windows system is not listed. It prompts me to load drivers (so as to enable my hd to be seen) but I can't figure which driver to boot and from whereI tried the ESB2 to no avail (extracted from bootcamp) In OSX, hd controller is stated to be Intel ESB2 AHCI. Can anyone help?