Changing a Legacy system to UEFI


  1. Posts : 207
    Windows XP Professional SP3/Windows 7 Ultimate x64
       #1

    Changing a Legacy system to UEFI


    Say I install Windows as Legacy, can I later change it to UEFI? Or doing so will require another clean install? Thanks.
      My Computer

  2.    #2

    For UEFI disable Legacy in BIOS, boot the Win7 DVD as a UEFI device. This change means the old install won't boot and needs to be deleted along with all other partitions to force the installer to change the HD format to GPT format - be sure to unplug all other HD's first.

    So for UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums. For install via flash stick special steps must be done from UEFI Bootable USB Flash Drive - Create in Windows

    Or to Bypass UEFI to Install WIn7 for a normal MBR install.
      My Computer


  3. Posts : 11,408
    ME/XP/Vista/Win7
       #3

    If you have Windows 7 installed, & two HDD's, you can clone Legacy to UEFI.
    Migrate BIOS x64 install to UEFI.

    As Paragon is upgrading there software, there may not be free version.
      My Computer


  4. Posts : 207
    Windows XP Professional SP3/Windows 7 Ultimate x64
    Thread Starter
       #4

    Thanks gregrocker, bookmarked those links. Theog, that MBR to UEFI/GPT migration looks very interesting. I'd assume that using Paragon isn't the only means of achieving this. Have you tested it? Is it reliable? Also, is this also applicable to a Win 8x64 installation or only to Win 7x64?
    And finally, will I notice any performance and/or stability improvement in using UEFI/GPT over Legacy/MBR?
    Thanks
      My Computer


  5. Posts : 11,408
    ME/XP/Vista/Win7
       #5

    I'd assume that using Paragon isn't the only means of achieving this. Have you tested it? Is it reliable? Also, is this also applicable to a Win 8x64 installation or only to Win 7x64?
    TESTED works well.
    Paragon 14 can be used for Vista x64, Windows 7 x64, & Windows 8/8.1 x64.
      My Computer


  6. Posts : 207
    Windows XP Professional SP3/Windows 7 Ultimate x64
    Thread Starter
       #6

    And what about the reverse, migrating from UEFI/GPT to MBR? Is that possible too?
      My Computer

  7.    #7
      My Computer


 

  Related Discussions
Our Sites
Site Links
About Us
Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 01:32.
Find Us