bootcamp won't let me install windows using GPT OR MBR partition style

Discussion in 'Windows, Linux & Others on the Mac' started by callumc59, Jan 15, 2018.

  1. callumc59 macrumors newbie

    Joined:
    Jan 11, 2018
    #1
    I've been trying for days to get windows 7 onto my "new" 2009 mac pro. it's fully decked out and i hope to install windows 10 onto it after installing 7. I've tried windows 7, 8 and 10, getting different error messages every time at the same spot. When selecting the partition I want to install windows on, I get error messages and am unable to proceed hitting the next button. I've tried everything i can think of, from partitioning under ntfs through to ex-fat on the main SSD (which gives me a whole other error), to removing the other SSHD's and installing whilst ignoring bootcamp entirely. I've finally got a solid error message installing windows 7 that reads "Windows cannot be installed onto this disk. The selected disk is of the GPT partition style."



    Here's where it gets frustrating (AGAIN)... when I make the disk MBR by formatting it as ex-fat or vice versa, it simply switches to say cannot install onto a disk of the MBR partition type. I'm absolutely lost. I've looked through countless forums and feel like i've tried everything. It's a 2009 mac pro, and i'm using the superdrive to install windows. please help as this is driving me crazy!
     
  2. expede macrumors regular

    expede

    Joined:
    Jan 15, 2018
    Location:
    Sweden
    #2
    Hi!

    I got the same problem. So I been watching Hrukey Mods on You tube. It solved some of my problems



    Best regards

    Per
     
  3. callumc59 thread starter macrumors newbie

    Joined:
    Jan 11, 2018
    #3
    Hi, i looked through but couldn't find any solution to this problem... could you be more specific?
     
  4. expede macrumors regular

    expede

    Joined:
    Jan 15, 2018
    Location:
    Sweden
    #4
    Hi!

    I got a Mac Pro 5.1 with several HD. I got frustrated when I could not install windows 10 an SSD. So, I made myself a DVD from the latest Win 10 (downloaded from Microsoft) and then I shut the computer down. Pulled all HD out and only had one SSD(FAT-32 formated with Disk Utility ) left in bay 1. Rebooted holding the alt-key down and chose the Windows install disk (Not the EFI, didn't work for me). Clicked the install and and accepted the license agreement and so on. When I got too the istall part, I got the same message "can not insall due to MBR windows will only install on GPT...". There are some symbols down below where you can delete the partitions. I totally deleted every partition and created a new one. BE WARE, I DID NOT USE BOOTCAMP. SO I HAD NO RISK OF DELETING THE MAC OSX. Sorry for caps lock =important. When the creation process was done. The install kicked in and everything went smooth. Windows 10 on a separated HD/SSD.

    Best regards

    /Per
     
  5. callumc59 thread starter macrumors newbie

    Joined:
    Jan 11, 2018
    #5
    thanks for the reply! just to confirm, you removed even the hdd/ssd where osx was installed? so only have 1 of my SSHD's in the machine whilst going through the windows installer, then it should allow me to continue? also when i plug the rest of my drives back in (including the boot ssd with osx) will windows still boot? Thanks again :))
     
  6. expede macrumors regular

    expede

    Joined:
    Jan 15, 2018
    Location:
    Sweden
    #6
    Hi!

    I pulled them all out. All, except the FAT-32 disk in bay1. Must be bay1. I think it will show up as disk 0 at install. This way you can always be safe not to delete your osx. Put the dvd in and hold down the alt -key. If there is a problem you can always reverse back.

    Best regards

    /Per
     
  7. callumc59 thread starter macrumors newbie

    Joined:
    Jan 11, 2018
    #7
    [​IMG]
    sorry this is probably a silly question, but bay 1 is number 1 in this picture yeah?.. and then when in reinsert my ssd and other sshd's I'll still have the option to boot the windows drive and the ssd i have osx installed on from the boot menu? Thanks for your help :))[​IMG]
     

    Attached Files:

  8. expede macrumors regular

    expede

    Joined:
    Jan 15, 2018
    Location:
    Sweden
    #8
    Hi!

    Bay1 is the one to the most left, of the four ones. The CD cabel goes as disk0 in Mac. So go for tray/bay1

    Best of luck

    /Per
     
  9. callumc59 thread starter macrumors newbie

    Joined:
    Jan 11, 2018
    #9
    IT WORKED! you amazing human :)))) now I just need to fix the drivers as bootcamp would only let me install through windows 7... when you went through this process how did you happen to sort the bluetooth drivers etc? thanks again!
     
  10. expede macrumors regular

    expede

    Joined:
    Jan 15, 2018
    Location:
    Sweden
    #10
    Find out where your BootCamp-folder is, in finder. Click in the search field in finder and it should look like "C:/user/desktop/BootCamp/Driver/Apple/...." something like that. Copy the pathway. Then you type in "cmd" in the search field. Right klick on it and start as administrator. You are now in terminal. Write "cd " and right click. Note the space after cd. Run BootCamp.msi. Not the Setup.exe.
    Then you should run RealTek/Setup.exe.
    Reboot.

    /Per
     
  11. bleater macrumors newbie

    Joined:
    Jul 19, 2008
    #11
    This worked for me.. the key was removing the EFI partition created by the Bootcamp installation app. If I removed or formatted only the other FAT32 partition, it would still complain.

    Having it in Bay 1 wasn't necessary, my drive was in Bay 2.
     

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10 January 15, 2018