Trying to install Windows 7 Pro 64-bit, only 32 installs

Discussion in 'Windows, Linux & Others on the Mac' started by adamZero, Oct 22, 2011.

  1. adamZero macrumors newbie

    Joined:
    May 23, 2011
    #1
    Hello everybody,

    I have a DVD of Windows 7 Professional 64-bit and I am trying to install this on my iMac (11,1; 2.8 GHz quad-core i7 etc). The problem is that when I install it and check out the properties, it says I have 32-bit W7 Pro installed. Has anyone had this problem before? Any ideas on how to fix it?

    All help is appreciated!

    EDIT: according to this, my computer should be able to take advantage of the 64-bit OS.
     
  2. ibuyufo macrumors 6502

    Joined:
    Sep 22, 2007
    #2
    I am pretty sure you have the 32bit windows 7 disc. There are two disc version one being 64bit.
     
  3. sngx1275 macrumors regular

    sngx1275

    Joined:
    Jan 27, 2009
    Location:
    Missouri
    #3
    Yeh. It sounds like you are installing from a 32bit install disk. Confirm you are installing from a 64bit source.. I've only bought the student version so I'm not 100% sure, but I don't think there are disks with both 32bit and 64bit on them..
     
  4. Bob Coxner macrumors 6502a

    Joined:
    Mar 24, 2011
    #4
    You can check the hash and/or checksum to see which iso you have.

    Here's the MD5 hash for the 32bit iso version of Win 7 Pro.

    D8F675AAEB48057452666B0CD686D7F5

    And the checksum

    578725D1

    If this is the hash you see then you have a 32bit iso.

    Here's a free program to check these numbers:

    http://implbits.com/HashTab.aspx

    Hash/checksum values are used to determine whether a file is genuine or has been tampered with. They can also be used to identify an unknown file.

    https://secure.wikimedia.org/wikipedia/en/wiki/MD5
     
  5. adamZero thread starter macrumors newbie

    Joined:
    May 23, 2011
    #5
    Thank you all for your replies. I torrented and burned a 64-bit .iso and installed, and now I have 64-bit Windows working.

    I had received the supposed 64-bit disk through MSDNAA for my school, and I checked the receipt and it claims to be 64-bit, however it seems that there was some sort of mixup with that.

    Thanks again for the suggestions, you were right that my DVD was wrong :)
     

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