1 Reply Latest reply: Sep 29, 2013 11:46 AM by rtheb
James Jackson5 Level 1 Level 1

I bought a Window 8 Pro 64 bit Install disk from Amazon so I could use Motionbuilder for a freelance job. I am having problems getting it installed though. Here is what I have done.


1. I used Bootcamp Assistant to partition my computer.

2. When it rebooted into Windows after the restart I got a black screen that said:


Non-system disk

Press any key to reboot


3. So I restarted and held down the option key. and this screen came up.


4. I tried the Windows disk first and a black screen came up that said:


CDBOOT; Couln't find BOOTMGR

No bootable device--


5. So I tried the EFI Boot disk and it opened up the Windows installer. However when I got to the screen to select the partition it told me I couldn't use the Boot Camp partition. Even when I tried to reformat the drive it gave me the same explanation for what the problem was:




Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed to GPT disks.

Windows cannot be installed to this hard disk space. Windows must be installed to a partition formatted as NTFS.

Windows cannot be installed to this disk. This computer's hardware may not support booting to this disk. Ensure that the disk's conti the computer's BIOS menu.

I don't know what else to try. Any ideas? Did I buy the wrong type of Windows for Bootcamp?

iMac, OS X Mountain Lion (10.8.3), 3.2 GHz Intel Core i5, 16 GB RAM
  • rtheb Level 1 Level 1

    From Apple:








    What can I do if my computer starts up to a black screen with white text that says "No Boot Disk Attached"?
    This message means that the Windows partition cannot start up, usually because of an issue with the drive formatting. The Boot Camp Setup Assistant creates the Boot Camp partition, but the Windows installer must format it to make it "bootable". To resolve this issue:

    1. Start up to OS X and run the Boot Camp Setup Assistant again.
    2. Remove the Boot Camp partition and re-create it.
    3. Install Windows again, this time using Windows to format the partition.
    4. Refer to the Boot Camp Installation & Setup Guide document for more details on installing Boot Camp.