Unable to install Windows 8 in Boot Camp because of MBR

I just this weekend reformatted my MacBook Pro (Mid 2010, 15", 2.4 gHz i5) and so I had to reinstall Windows 8 with Boot Camp. I had it working fine before, although the lack of drivers made it absolutely terrible (Has Apple released any drivers for it yet?) but the installation went without a hitch.  When I tried to install Windows 8 this time though, it did not work at all. On the OS X side, everything went as expected, and when I went to Windows installation everything worked until I had to select a partition.  I feel like at this point I should point out that I have removed the optical drive from my Mac and have the Optibay in my optical drive bay and have a 128 GB SSD as my main drive and a 512 GB SSD in the optical drive slot, which was where my Bootcamp partition was, around 250 GB.  I was installing Windows 8 using an external enclosure for my Superdrive with the Retail Windows 8 DVD full version.  Anyways, when I went to select the partition, it said that it was unable to install because
"Windows cannot be installed to this disk. This computer's hardware may not support booting to this disk. Ensure that the disk's controller is enabled in the computer's BIOS menu."
"Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed GPT disks."
I have heard many conflicting resolutions to the problem, I have heard that I need to remove the other drive and install the optical drive and I have heard that this works very well, and many other things, I just want to find the correct solution to this. Thank you! And I hope I provided you with enough information!

I have a cd drive with a bootable windows 7 disc and I already downloaded the drivers needed to a pendrive on MS-DOS Format.
However this devil things asks me for a windows 8 disc.
Many many thanks if someone knows how to do it.

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