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JTWall Level 1 Level 1 (0 points)

I am attempting to install Windows 8.1 64-bit via Bootcamp on my mid-2010 15-inch MacBook Pro, but the ISOs and bootable USBs all include both the 32-bit and 64-bit versions of Windows 8.1 and I receive an error message "Bootcamp only supports 64-bit Windows installation on this platform. Please use a ISO file for 64-bit Windows installation." It appears that Bootcamp is detecting the 32-bit version and ignoring the 64-bit version so I am unable to install.

 

I have tried editing the Bootcamp Info.plist to make my MacBook Pro (MacBookPro6,2) eligible for the 32-bit installation, but the error still appears.

 

Does anyone have a solution for how I can install Windows 8.1 with Bootcamp?


MacBook Pro, Mac OS X (10.7.2)
  • Brett L Community Specialists Community Specialists (4,335 points)

    Hi JTWall,

     

    Directions for creating a compatible ISO for Boot Camp installation of Windows 8.1 are available here -

     

    Boot Camp: Mac restarts or displays ‘Press any key' when installing Windows from DVD

    http://support.apple.com/kb/TS5373

     

    Thanks for using Apple Support Communities.

     

    Best,

     

    Brett L

  • JTWall Level 1 Level 1 (0 points)

    Hi Brett,

     

    Thanks for responding, but this article doesn't appear to address my issue. The problem I'm having arises from the fact that Bootcamp disallows 32-bit Windows 8.1 from being installed on my MacBookPro6,2, but the Windows 8.1 ISO is only available as a combined 32-bit and 64-bit installation ISO (i.e., it is one disc/ISO where you can decide which version to install -- 32-bit or 64-bit). Bootcamp detects that the ISO contains the 32-bit version (and ignores the 64-bit version that is also available) and will not let the installation proceed.

     

    Cheers,

    Jordan

  • Loner T Level 5 Level 5 (7,210 points)

    Are you using the USB drive created by Bootcamp to install Windows?

  • JTWall Level 1 Level 1 (0 points)

    USB install is disabled on MacBookPro6,2 (unless I modify the Bootcamp Info.plist). I was trying to install with a Windows 8.1 installation DVD created on a Windows machine.

  • Loner T Level 5 Level 5 (7,210 points)

    The retail disks I have contains two disks, one 32-bit, another 64-bit. Can you create a DVD with just 64-bit Windows?

  • JTWall Level 1 Level 1 (0 points)

    This doesn't appear to be an option when downloading Windows 8.1. I've heard that the retail version comes with two discs, but the support on the Microsoft website said it comes as one combined disc. I'll have to confirm which is the case.

  • sonmas Level 1 Level 1 (0 points)

    Hi JTWall,

    I got the same problem. I installed windows 8.1 in february it works. I erase it months ago but now I need it again but I can't create the bootable USB drive as before, I have the same error message as you. Do you find a solution ?

    Thank you

  • alexjacobsen Level 1 Level 1 (0 points)

    Hi,

     

    I am also experiencing it. Any of the former that have found a solution - or maybe Brett can help?

     

    Br Alex

  • alexjacobsen Level 1 Level 1 (0 points)

    Hi Loner T,

     

    I don't get it. I have an image, i.e. ISO, of Windows 8.1, but bootcamp will not recognize it. There is no running Windows OS. Since there is no OS running, there is no Windows updater either. So I do not have the option of installing SP1 on the non-existing systems. Or am I missing something here?

     

    Thanks for your reply

     

    BR Alex

  • Loner T Level 5 Level 5 (7,210 points)

    Does the ISO contain both 32-bit and 64-bit versions of Windows? BCA has issues with a combined ISO.

  • WinOrLose Level 1 Level 1 (0 points)

    I get the same error, but I'm using a 64bit only Windows 8.1 ISO and different target hardware. I haven't found a workaround anywhere. I'm trying to install Windows 8.1 on a new iMac 5k* using the Bootcamp Assistant Version 5.1.2 (497) included with Yosemite 10.10.1. I bought Windows 8.1 on a Windows 7 PC and used Microft's mediacreationtool.exe utility to create the 64-bit-ONLY iso. The utility allows you to select the Edition of Windows 8.1 (vs 8.1 Pro), the language, the architecture (32bit x86 or 64 bit x64), then you can select the media type: bootable USB or ISO.

     

    i Selected the English 8.1 64bit ISO and copied it over the LAN to the iMac since it doesn't come with an optical drive.I launched Bootcamp Assistant and che ked all 3 available Checkboxes as described in the instructions, browsed to the ISO image, selected the FAT32 formatted USB stick and clicked continue, that's when I get the error about 64 bit Windows is required, the same as the title of Bill W's post above.

     

    I Created the ISO again just to make sure 64 bit was selected and got the same results. I Rebooted, same result. Others said they just copied the ISO to their documents directory and that fixed it, not for me. Others said they just had to rename the ISO to DMG, that didn't work for me either.

     

    In another article here, someone suggested modifying the info.plist for Bootcamp Assistant, I tried that, same result as several others, problems with unlocking and replacing the edited .plist file.

     

    When I examine the files in the ISO on the PC, there's nothing to indicate that there are two builds to support both Windows architectures. Other people claim they've installed Win 8.1 on this hardware successfully using the same technique.

     

    Any ideas? Any additional info required?

     

    Thanks in advance!  Is there a way to cross-post this in other forums or threads if this is not the best place for it?

     

    Matt

     

    *My iMac is close to its factory state (I some App Store apps), iMac (Retina 5K, 27", late 2014, Model ID 15,1), Yosemite 10.10.1 (Build 14B25), i7, 3Tb Fusion, 32Gb RAM, 295M w/ 4G, SanDisk Cruzer Edge Media brand USB memory stick with 16Gb for use with Bootcamp. 1Tb free space on Fusion drive, was planning to allocate 100Gb out of that for Windows.

  • Loner T Level 5 Level 5 (7,210 points)

    WinOrLose wrote:

     

     

    *My iMac is close to its factory state (I some App Store apps), iMac (Retina 5K, 27", late 2014, Model ID 15,1), Yosemite 10.10.1 (Build 14B25), i7, 3Tb Fusion, 32Gb RAM, 295M w/ 4G, SanDisk Cruzer Edge Media brand USB memory stick with 16Gb for use with Bootcamp. 1Tb free space on Fusion drive, was planning to allocate 100Gb out of that for Windows.

    I have installed W8.1 on a iMac5K, the base R290 model, using a USB2 Sandisk Cruzer (16GB).

     

    1. Check your USB, whether it is USB2 or USB3. Windows installer does not support USB3.

    2. If the ISO is corrupted for any reason during transfer between machines, you may want to check its integrity using md5sum, or something similar.

    3. Can you double-click on the ISO on the iMac5K and view contents in Finder?

  • alexjacobsen Level 1 Level 1 (0 points)

    Just a small update from me: After half a year where no-one had the answer, but nice ideas, I gave up. I have passed on my Mac and bough a Lenovo

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