RAM and boot camp

Discussion in 'Windows, Linux & Others on the Mac' started by hanHans, Dec 17, 2007.

  1. hanHans macrumors newbie

    Aug 29, 2007
    I got a Mac Pro with 4 gb ram. However, when I boot up Vista business the OS only detects 2 gb ram. What could the the cause of this?
  2. Phil A. Moderator

    Phil A.

    Staff Member

    Apr 2, 2006
    Shropshire, UK
    Wirelessly posted (iPhone: Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/3B48b Safari/419.3)

    vista in a word. The 32 bit version only addresses 2gb of ram.
  3. LeviG macrumors 65816

    Nov 6, 2006
    Norfolk, UK

    maybe on a mac but not on a pc, it should at the very least be registering 3Gigs, with SP1 it will state 4Gigs but still register slightly less.

    IIRC theres a 2gig limit to the bios emulation, might change with vista sp1 as it has support for efi (mac uses this iirc) as well as the bios.

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