How to change Win8 installation from 32bit to 64bit?

Discussion in 'Windows 8' started by gio9sig551, Oct 31, 2012.

  1. gio9sig551

    gio9sig551 MDL Novice

    Oct 31, 2012
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    Hi to all,

    I just updated my system to windows 8 but I now realized that it installed the 32 bit version in a computer with a 64 bit CPU.
    I downloaded the installer form another computer that is 32bit so no problem for that. Now I downloaded a new installer from the 64bit computer and installed again windows keeping all files and settings but it's again 32bit.

    Should I use the ISO downloaded from the 64bit computer and install again formatting the disk?

    And how can I get rid of the previous version of windows from the boot maneger? Is there a way to clean the boot?

    Thanks!
     
  2. amolji

    amolji MDL Novice

    Oct 28, 2012
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    Format the drive and install fresh copy of win8 pro x64
     
  3. c3po

    c3po MDL Junior Member

    Feb 12, 2009
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    Do you have 4 Gb of ram or more ? If NO - you should keep actual instalaltion.
    If YES you may have to reinstall from scratch - including formating actual install.
     
  4. gio9sig551

    gio9sig551 MDL Novice

    Oct 31, 2012
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    Yes no problem for the hardware. I use 64bit windows for years. I was just hoping to avoid another fresh installation..

    Any advice for the boot manager cleaning?

    Thanks for confirming the bad fact that I have to format again :p
     
  5. warlordll

    warlordll MDL Member

    Apr 25, 2011
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    As mentioned before re-install fresh copy (64bits) which can be got from this site or many others..have tested myself using purchased Key..all works fine :)
     
  6. s1ave77

    s1ave77 MDL Guide Dog/Dev

    Aug 15, 2012
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    Afaik there is no possibility switching from x32 to x64 OS.
     
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