Windows 8 and 8.1 Forums


Windows 8 PAE support?

  1. #1


    Posts : 1
    Windows 8

    Windows 8 PAE support?


    I am a Linux user, but this new Windows might yet convert me =) But I do have some problems. Apart from learning a new OS, this keeps worrying me:

    As I don't use Windows, I didn't really check what kind of a license I was getting. Turned out it was Windows 7 Starter which is only available in 32-bit. But I need to use 6-8 GBs of ram. I thought it would create no big problem as I was also using Arch in 32-bit with PAE mode. But Wikipedia reports that "Microsoft Windows implements PAE if booted with the appropriate option, but current 32-bit desktop editions enforce the physical address space within 4 GB even in PAE mode".

    So, is their policy still the same with Windows 8? If it is, is there a way to update from Windows 7 Starter to 64-bit Windows 8 Pro?

    Thanks for your help.

      My System SpecsSystem Spec

  2. #2


    Posts : 354
    Windows Server 2012 Standard w/Hyper-V


    You cannot update from 32-bit to 64-bit. That much I know. I haven't tried installing Windows 8 x32, so unfortunately, I can't answer the first question.
      My System SpecsSystem Spec

  3. #3


    Orbiting the Moon
    Posts : 2,975
    Windows 10 x64


    Quote Originally Posted by GERGE View Post
    But Wikipedia reports that "Microsoft Windows implements PAE if booted with the appropriate option, but current 32-bit desktop editions enforce the physical address space within 4 GB even in PAE mode".

    So, is their policy still the same with Windows 8? If it is, is there a way to update from Windows 7 Starter to 64-bit Windows 8 Pro?

    Thanks for your help.
    I used 32bit Win8 only on some old pentium 3 (one that has PAE) for testing. Unfortunately, I didn't had 4GB of RAM to confirm what you're asking.

    Sorry I didn't tried this before, I usually play in VirtualBox but didn't thought about this one because I use 64bit VM:
    If you're still interested in finding the answer, install 32bit Win8 in VirtualBox and enable PAE + give the machine 4GB RAM or more.

    Click image for larger version

    This should show if all memory is allocated (like in Linux, PAE kernel) or not. But I still think that the policy is the same as in Win7/XP.

    Do this step in Arch or where you are comfortable and all the memory is available. VBox should run fine for testing.

    64bit:
    The best solution is the clean install, because as stated above, you cannot upgrade from 32bit to 64bit.

    Cheers
    Hopachi
      My System SpecsSystem Spec

  4. #4


    Orbiting the Moon
    Posts : 2,975
    Windows 10 x64


    Forget what I said about that test. I've made it and it sees 4GB or more but ONLY 3GB are usable (being seen in the system window).
    Compared with a Ubuntu Server x86 VM, here you can use 4GB or more. Both systems were tested under VMware Player 5 where PAE is available by default.

    but current 32-bit desktop editions enforce the physical address space within 4 GB even in PAE mode
    Wikipedia was right.

    So:
    But I need to use 6-8 GBs of ram
    Not possible with Win8 x86.

    The only solution is a clean install of Win8 x64.

    Regards
    Hopachi
      My System SpecsSystem Spec

  5. #5


    Philadelphia
    Posts : 214
    Windows 8.1 Pro x64


    PAE on a workstation Windows OS is a bad idea, unless you are trying to make an unstable system. There's no reason to fear the x64 OSes anymore, so if you need to use 6-8 GB of memory, just go with x64.
      My System SpecsSystem Spec

  6. #6


    Posts : 57
    Windows 7 Professional


    I started off with Windows 7 in 64-bit mode and never looked back. I've never had any problems with the myriad of programs I run on it, many of which are very old. For the two that would not install in a 64-bit OS I used the Windows 7 Virtual Machine and loaded XP in it. I've already tested Hyper-V, the replacement for the Windows 7 Virtual Machine in Windows 8, by installing XP in a virtual machine for these two programs and they work fine too.
      My System SpecsSystem Spec

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