Imac won't recognize windows 7 disc during bootcamp assistant

The disc is brand new out of the box (Real version not a burned ISO).  It runs for a second or not at all then ejects the disc.  The optical drive works fine, there was another disc in there that it attached to just fine before.  Everything else checks out.  What else can I try.

Update: I've successfully installed Windows by re-burning my Windows .iso image at 4x. The install went smoothly, but Windows is now unable to boot. After installing and going through its series of reboots, then fails to boot after restarting (after given the option to select what method of updating you want Windows to use).
This is some of the stuff Windows says, on a black screen with white text, when the boot fails:
mcfg 0x8ee39000 0x3c 0x8ee0f000 0x195000 0x3
(insert a ton more of that ^ stuff)
recalculating checksums rsdt len 0x6c, xsdt len 0xb4
Completed
Booting Windows 7/Vista/Server (No SLIC - Pointer)
Booting Windows 7/Vista/Server (No SLIC)
Booting Windows NT/2000/XP
Booting Enter Command Line
Boot failed! Press any key to enter command line.
I've dug  through various archived forum postings in the programming bowels of the internet. Apparently there was/has been/is a known issue in which Macs refuse to boot Windows when the Mac in question has a 2TB hard drive. This is due to some GRUB issue or something.
I have no idea what to do. I need Windows, and I'm quite sure no Genius appointment will help me solve this problem. So much for a Mac seamlessly running Windows via Boot Camp.

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