Running Windows 7 under bootcamp on a 1,1 mac pro

Discussion in 'Mac Pro' started by lloyd709, Sep 3, 2010.

  1. lloyd709 macrumors 6502

    Jan 10, 2008
    I want Windows to see more than 2 Gig of my 12 Gig of memory on my 1,1 2006 Mac Pro. I'm not sure if it's possible though.

    I'm currently running Windows Vista 32bit. I think I read somewhere that you can't run Vista 64 bit or Windows 7 on a 1,1 mac pro - which you have to do to see more than 2 Gig of memory. Is this the case? Is anyone running Windows 7 64 bit under bootcamp on a 1,1 mac pro (and seeing all the memory in the computer)?

    I can't get an answer on the Windows Forum so I thought I'd try here as I think it's a 1,1 Mac Pro issue.
  2. lloyd709 thread starter macrumors 6502

    Jan 10, 2008
    That's great - seems like you can install Win 7 OK.

    But I'm sure I read (in the same place that I read that you couldn't install Win 7 though) that you can't use more than 2 Gig of the memory.

    Would be great if a Win 7 Bootcamp user on a 1,1 2006 mac pro could confirm that all the memory in the computer is being used - before I go out an buy a copy of Win 7.

  3. DualShock macrumors 6502

    Jun 29, 2008
    I can confirm that's the case on a 2008 3,1 Mac Pro. All memory is seen by Windows 7 64-bit (I have 10 GB in mine). But yeah, maybe someone else can chime in with 2006 1,1 info.
  4. hbryan macrumors newbie

    Mar 5, 2009
    the 1,1 has 32-bit EFI, which means no 64-bit Windows 7 for either one of us. :(
  5. hms84 macrumors regular

    Jul 28, 2007
    I did this and worked for me, Mac Pro 1,1 and WIN7 64-bit.
  6. Mackilroy macrumors 68040


    Jun 29, 2006
    Wrong. I have Windows 7 64-bit installed on my 2006 Mac Pro. I only have four gigs of RAM, but it sees all four gigs.

    lloyd: go out and buy a copy of Win7. I did. It'll work fine.

    (disclaimer: I didn't use Apple's Boot Camp drivers, I just used it to partition the drive so I could install Windows. I let Windows download drivers manually for the most part)
  7. nekonoko macrumors newbie

    Aug 5, 2010
    I have a MacPro1,1 with 20GB RAM running Windows 7 x64. All RAM is seen and works just fine.
  8. lloyd709 thread starter macrumors 6502

    Jan 10, 2008
    Thanks for the confirmation.
  9. kgapp macrumors regular

    Jan 6, 2004
    Chicago, IL

    This is definetely a false statement. I have Win7 64bit running on my 2006 MacPro 1,1 and all 8gb of memory are fully recognized. Just follow the instructions in the link a few posts back and you will have it up in running in less than 2 hours. Its a couple of small hoops to jump through but its easy and it works.
  10. Bob Kiwi macrumors member

    Jul 19, 2010
    Mac Pro 2,1 here, 9GB RAM all seen

    Followed the initial linked instructions to modify a Windows 7 x64 ISO and get the Apple Boot Camp drivers and everything works great.
  11. Cindori macrumors 68040


    Jan 17, 2008
    efi is 32 bit yes, but the bios emulation is 32/64 bit
  12. ghislain macrumors member

    Apr 22, 2009
    It works

    I have installed Win 7 64 on my 1,1 2006 Mac Pro. The 6 Go RAM are seen. No problem
  13. nanofrog macrumors G4

    May 6, 2008

    EFI32 only prevents users from running K64 versions of OS X and some graphics cards.

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