Windows 10: Converting MBR to GPT for EFI boot? Solved

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  1. topgundcp's Avatar
    Posts : 2,023
    Ubuntu14.04x64 MintMate17x64 Win10Prox64
       28 Nov 2015 #11

    Mystere said: View Post
    Sorry, I missed the first link. But no, converting it to GPT will not make it automatically an EFI boot. There is more to it, yes it may boot up, but won't be EFI.
    @Mystere
    Sorry but did you read the steps I posted ?. What do you mean by: It may boot up, but won't be EFI ? How else does it boot up with a GPT disk ? Here's the screen shot
    Click image for larger version. 

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    Last edited by topgundcp; 28 Nov 2015 at 15:02.
      My System SpecsSystem Spec

  2.    28 Nov 2015 #12

    You have an EFI partition. If you were originally an MBR, then it won't have created an EFI. My point is, simply changing to GPT is not enough.
      My System SpecsSystem Spec

  3. Word Man's Avatar
    Posts : 1,177
    Windows 10 Home
       28 Nov 2015 #13

    Mystere said: View Post
    You have an EFI partition. If you were originally an MBR, then it won't have created an EFI. My point is, simply changing to GPT is not enough.
    What you say is true enough. However, creating the EFI partition is covered in his step number 3.
      My System SpecsSystem Spec

  4.    16 Sep 2016 #14

    If you have just brought a 4Tb WD or Seagate Hard Drive and you having problem to install See This : http://trickiknow.com/convert-mbr-to...seagate-drive/
      My System SpecsSystem Spec

  5.    04 Dec 2016 #15

    topgundcp said: View Post
    I saw the link above on How to Convert from MBR to GPT. TBH, I am overwhelmed with all the steps involved so here's an alternative:
    1. Download and install Macrium Reflect Free and create a backup image of your current MBR Windows 10 to an external HD. (You should anyway before modifying any Windows partitions in case something goes wrong)
    2. Create a bootable Macrium Rescue disk on a USB/DVD (from Macrium application, click on the first icon on the top left)
    3. Next, wipe out the disk and install a fresh copy of Windows 10 using GPT partition scheme. The installation should create all the needed partitions and C drive. No need to run updates because you're going to overwrite the C drive with the C drive from the backup.
    4. Next you'd want to ovewrite the C partition from fresh install with the C partition from the backup image.
      Boot up from the Rescue Image and follow the steps in the video as shown below and you're done.

    Your method did not work for me when converting my current Windows 8 MBR disk, however I did come out knowing how to create Windows PE 5.0 Rescue disk using Macrium after reading your post though.
      My System SpecsSystem Spec


 
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