Mac Pro 2013 OS 10.9.3, Windows BOOTCAMP, No Bootable Medium

[macisin]

A couple of notes...

• Have Windows 7/8 running as Guest OS under VB running on a variety of other MacOS machines running BOOTCAMP (MacBook Pro)
• MacBook Pros running 10.8.4 and VB 4.3.4, 4.3.8 & 4.3.10
• Have latest 4.3.12 installed on Mac Pro 2013
• Have latest Bootcamp Assistant installed
• Windows Bootcamp startup and desktop operations execute normally

I went through the install of VB, installed the Extension pack, setup the raw disk, linked in the VB GUI, setup Configurations for OS Boot. Upon boot I get the dreaded "No bootable medium found!" message. I have included the latest VBox Log file but can't seem to figure out why I can't get the Windows OS to boot. Any thoughts?

[macisin]

Does anyone from the VirtualBox team have an idea of why this won't work on this machine, with this version of the OS, BootCamp and the latest VB release?

[noteirak]

Cross-post of viewtopic.php?f=2&t=62074 - locked.