Windows 10: GPT Partition Style preventing Windows 10 Installation Solved

Page 1 of 2 12 LastLast
  1.    01 Mar 2015 #1

    GPT Partition Style preventing Windows 10 Installation


    I just built a custom pc with a new mobo.
    The hdd is used and has 8.1 on it which is not legal on this mobo.

    I can't really afford to buy 8.1 again. Especially since 10 is free.
    I burnt 10 to a disk and when I try doing a clean install I get a problem with GPT message
    "Can't install Windows on this disk. The disk is in the GPT partition style.".

    I had no problem installing 10 on a laptop with 7. But that was a direct install from Windows, not a disk. 7 is a legal copy on that laptop and is still there for me to go back to if I don't like 10

    I do like 10 and 8.1 on this mobo is not a legal copy so I can't legally upgrade it. Just a clean install of the free Windows 10 without ties to Windows 8.1.
      My ComputerSystem Spec


  2. Posts : 16,183
    Microsoft Windows 10 Pro 64-bit 14393, Windows 10 Insider Fast Ring, Windows 8.1 Update, Ubuntu
       01 Mar 2015 #2

    Have you got your new motherboards Bios set to UEFI or Legacy BIOS?
      My ComputersSystem Spec

  3.    01 Mar 2015 #3

    Windows can only install to GPT when using an EFI bios, and booting from EFI media in EFI mode.

    Having said this, you do understand that Windows 10 isn't "free". It's currently a preview version that has a number of problems, including compatibility issues, and issues which can cause you to lose all data or even potentially hardware attached to your system (there were reports of earlier versions of 10 bricking hard drives, for instance).

    Further, once Windows 10 is released, it will only be free to those who have an existing valid Windows 7 or Windows 8.x license for that computer.
      My ComputerSystem Spec

  4.    01 Mar 2015 #4

    Mystere said: View Post
    Further, once Windows 10 is released, it will only be free to those who have an existing valid Windows 7 or Windows 8.x license for that computer.
    I knew I read something about Windows 10 being FREE for the Technical Preview Users & Testers. I know my eyes can be playing tricks on me because I really want a totally free copy of 10. BUT,, after reading this article by Paul Thurrott many times; I believe it says anyone can UPGRADE to Windows 10 from 7, 8, 8.1 or Windows 10 Technical Preview. I could be wrong again.
    http://winsupersite.com/windows-10/w...ion-windows-10
      My ComputerSystem Spec

  5.    01 Mar 2015 #5

    I've tried with UEFI Enabled and Disabled.

    I think mobo is set to UEFI

    This is what appears in one of the sections for UEFI or BIOS

    Boot Option Priorities
    AHCI PO:WDC WD10EZEX-602F5A0
    AHCI PO:Optiarc DVD+/ AD72
    Windows Boot Manager
    UEFI: Optiarc DVD+/ AD7200S
    Disabled
      My ComputerSystem Spec


  6. Posts : 16,183
    Microsoft Windows 10 Pro 64-bit 14393, Windows 10 Insider Fast Ring, Windows 8.1 Update, Ubuntu
       01 Mar 2015 #6

    choose custom install and delete all partitions and let the windows installer format and partition for you.

    Edit: like Mystere said, to use Windows 10's RTM you're going to have to get an activation key be it 7 or 8 or 10 when the preview phase is over. The only legal free OS's are some linux distros.
    Last edited by Cliff S; 01 Mar 2015 at 16:12. Reason: more info
      My ComputersSystem Spec

  7.    01 Mar 2015 #7

    I'll need to get another hdd for backup before I delete all my partitions and data.
    This article goes with the first one I mentioned and provides the key about halfway down. http://www.intowindows.com/windows-1...w-product-key/
    My reading comprehension isn't the best and I know it. There was another article I'm looking for where, MS is treating all versions above Vista as "Eligible for Windows 10 Upgrade" . "Windows 10 Technical Preview" included
      My ComputerSystem Spec

  8.    01 Mar 2015 #8

    pcRat10 said: View Post
    I've tried with UEFI Enabled and Disabled.

    I think mobo is set to UEFI

    This is what appears in one of the sections for UEFI or BIOS

    Boot Option Priorities
    AHCI PO:WDC WD10EZEX-602F5A0
    AHCI PO:Optiarc DVD+/ AD72
    Windows Boot Manager
    UEFI: Optiarc DVD+/ AD7200S
    Disabled
    You need to boot from the UEFI: Optiarc DVD+ to boot in UEFI mode to install in UEFI mode.
      My ComputerSystem Spec

  9.    01 Mar 2015 #9

    Thank you. I'll be back to let you know.
      My ComputerSystem Spec

  10.    01 Mar 2015 #10

    Cliff S said: View Post
    choose custom install and delete all partitions that part worked ok
    and this second part never appeared and let the windows installer format and partition for you.

    Edit: like Mystere said, to use Windows 10's RTM you're going to have to get an activation key be it 7 or 8 or 10 when the preview phase is over. The only legal free OS's are some linux distros.
    it said something about partitions not being in right order and I clicked Next anyway. No more illegal 8.1
    Oh well, I have a clean hdd even tho I may need to buy a new one and reinstall 10
    Attached Thumbnails Attached Thumbnails Screenshot (1).png  
      My ComputerSystem Spec


 
Page 1 of 2 12 LastLast

Related Threads
Solved Dde server window preventing shutdown in Windows Updates and Activation
After the last major update, my computer upon hitting shutdown, displays a pop-up stating that "The instruction 0x00007FFFFF66CC60 referenced at 0x000000000000 the memory could not be read - Click okay to terminate" and behind the pop-up, windows...
Hi, Is there any way of restoring to the older Windows 8 style start screen? I was able to do this in the previous iteration of the preview, but unable to do it on the current 9926. Thanks
Hey there, I am trying to install Windows 10 10130 onto my laptop's blank partition that is 400 GB. Upon installing I noticed it gives me an error that says "We couldn't create a new partition or locate an existing one." I'm not sure what this...
I spotted this on HTG. more... Windows 10 Includes a Linux-Style Package Manager Named ?OneGet?
Invoke a one time instance of XP Style "Alt+Tab" Switcher in Windows 10 Technical Preview: (Just for fun!) 6135 Press and hold right Alt key►tap left Alt key►then tap Tab key to reveal the Switcher and select►stop on desired thumbnail►release...
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 16:36.
Find Us