Can 64 bit Windows 8.1 work on 32 bit system?

Drsunil V February 1, 2014
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Can 64 bit Windows 8.1 work on 32 bit system? The installation CD of 64 bit even mentions ’32 bit computer’ in its system requirement.

  1. Bruce E
    February 2, 2014 at 12:00 pm

    Since I haven't seen an actual Windows 8 or 8.1 retail or OEM disc, I'll have to work off of a Windows 7 disc. The system requirements there are listed as:
    1 GHz or faster 32-bit (x86) or 64-bit (x64) processor
    1 GB RAM (32-bit) / 2GB RAM (64-bit)
    .....
    So the system requirements for both 32-bit and 64-bit systems are there in a single listing instead of having separate listings for each. I would imaging that Microsoft hasn't changed their formatting of these requirements.

    You should also find that if you attempt to install the 64-bit version of Windows on a 32-bit system, the installer won't even run. It should terminate with an error message stating that you are using the wrong architecture. At least that is what it did with previous versions of the OS.

    • Drsunil V
      February 2, 2014 at 5:53 pm

      Thanks. I am asking this only for knowledge as it can help us and readers to safeguard against problems
      associated with pirated copies : Please tell , How do pirated copies of windows are associated with working activation keys to enable installing the windows?

      and

      Do they download torrents of windows?

      Please clarify how it works?

  2. Oron J
    February 2, 2014 at 11:24 am

    The 64 bit versions of Windows (8.1 or otherwise) will only run on systems with 64 bit processors. They will simply not run on 32 bit CPUs. That said, you can run 32 bit applications on such versions of Windows as there is a sub-system which supports this.

    • Drsunil V
      February 4, 2014 at 5:20 pm

      hi. Please tell that the files from early version can be used in new version? including bank security patches?

    • Bruce E
      February 4, 2014 at 5:56 pm

      With a dual-boot system, the OS files from the 2 different systems are not intermixed. They each are sitting on their own partitions.

  3. Dalsan M
    February 1, 2014 at 11:48 pm

    As long as the CPU is 64 bit compatible (most recent computers from the past several years are), you should be able to install a 64 bit operating system, regardless of previously installed operating systems. The only time you would have an issue with an already installed 32 bit operating system is when you select the upgrade upgrade option from 32 bit Windows to 64 bit Windows.

    • Drsunil V
      February 4, 2014 at 5:22 pm

      Thanks. Please tell that the enabling of dual-boot of win 7 on pre-installed windows xp through tool like BCD free , is to be done after installing win 7 on xp?

    • Bruce E
      February 4, 2014 at 5:58 pm

      During Windows installation, the installer will detect if there is an existing previous version of Windows already installed on the system and automatically configure the bootloader to allow the user to select the OS to boot when the computer is (re)started.

    • Drsunil V
      February 5, 2014 at 4:23 pm

      Thanks. Please tell that files on pre-installed xp be utilized on win 7 too in both dual boot?

      To enable internet of xp through wired router , the settings in router remain unchanged? and what settings in win 7 to receive internet active on win xp?

  4. Hovsep A
    February 1, 2014 at 9:22 pm

    Well if you try to install 64bit Windows and somehow get lucky then your 32bit CPU gets into instability situation, you will need 64-bit drivers, you can use 64bit Linux live version to boot and do some testings. Or you can try on Simics emulator and selecting a "Hammer" or x86-64 profile
    http://en.wikipedia.org/wiki/Simics

    or you have CPU EM64T supported
    http://www.intel.com/support/processors/xeon/sb/cs-012580.htm

    Now if it is upgrade from Windows 8 then perhaps upgrade to 64bit Windows wont work and you get license activation problem,. Upgrade Advisor will only provide you with the same platform type (32-bit/x86 or 64-bit/x64).
    A 32-bit operating system will boot/run the CPU in "protected mode", while 64-bit software requires that the CPU operate in "long mode".
    Long mode
    http://en.wikipedia.org/wiki/Long_mode
    Protected mode
    http://en.wikipedia.org/wiki/Protected_mode

    • Drsunil V
      February 2, 2014 at 5:54 pm

      Thanks. Please tell , while installing win 8.1 in dual boot , Is shrinking space option and create new volume option for creating option ) one and the same? if no , how are they different?

    • Drsunil V
      February 2, 2014 at 5:56 pm

      Corrected comment : Thanks. Please tell , while installing win 8.1 in dual boot , Is shrinking space option and create new volume option ( for creating partition ) one and the same? if no , how are they different? Can new volume or partition be created without shrinking? and say for 20 GB , what figure to put in which box while creating partition in win 7?

    • Hovsep A
      February 3, 2014 at 10:19 am

      In Disk Management, right-click the volume that you want to shrink, and then click Shrink Volume.
      In Disk Management, right-click an unallocated or free area, and then click New Simple Volume

    • Drsunil V
      February 4, 2014 at 5:19 pm

      hi. Please tell , is it necessary to put .iso to usb drive from installation dvd , for installation? or is it only for torrent .iso files to be put on usb? because installation procedures mention .iso image file to put on usb drive

    • Hovsep A
      February 4, 2014 at 6:28 pm

      you can burn it on cd, this is what i done for windows 8

    • Drsunil V
      February 5, 2014 at 4:21 pm

      Thanks. Please tell , why or when would BCD tool to enable dual-boot for win 7 on pre-installed win xp be required? is it required only to rename previous version to win xp or greater than that? Is it optional after win 7 has been installed on win xp in dual boot?

    • Hovsep A
      February 5, 2014 at 8:01 pm
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