Windows 10: Windows won't boot in UEFI mode, deleted EFI partition.

Discus and support Windows won't boot in UEFI mode, deleted EFI partition. in Windows 10 Installation and Upgrade to solve the problem; You have to make a Windows USB that has UEFI support on it. You can best use RUFUS for this and use "partition scheme for UEFI". This should... Discussion in 'Windows 10 Installation and Upgrade' started by OnePlus, Aug 24, 2015.

  1. masch Win User

    Windows won't boot in UEFI mode, deleted EFI partition.


    Hello everyone

    I also have the same problem as the OP.

    I converted my MBR to GPT using gdisk and I've lost all my boot information! I am currently running a Ubuntu Live from a USB drive and I don't have any other computer.

    My laptop drive has 0.2GB EFI partition (empty), 490GB msft partition (Windows 10) and 1GB partition (it says recovery but i don't know how to access it)

    I can't boot into Windows 10 at all. I can see my windows drive from this usb stick but that's all.

    All the search results on the internet has all been about "how to boot from usb and install Windows 10" but I don't want to install Windows 10 - I just want to boot it again.

    This thread seems to be the only one that address this.

    I am trying to follow Rudy Mas' instructions but I only got up to "Run RUFUS, in Partition Scheme choose GPT UEFI, then create a USB disk".

    But it is asking me for a bootable disk image. I don't know what ISO and where can I find them? From Microsoft it wants be to use a MediaToolCreator to create an ISO, but that only runs on Windows.

    Secondly, if I do get a Windows 10 ISO - how would I tell the usb stick to boot my Windows 10 in my PC? And most importantly, if that works - how would I transfer the UEFI info from the usb stick over to my EFI partition?

    To organize my questions:
    1) Where can we download a true Windows 10 Pro .iso file?
    2) How do I boot my own Windows 10 from a generic windows 10 bootable usb?
    3) How could I transfer the EFI information from the generic windows 10 bootable usb into my own EFI partition?

    Thank you all for your guidance
     
    masch, Aug 18, 2017
    #31
  2. NavyLCDR New Member
    NavyLCDR, Aug 18, 2017
    #32
  3. masch Win User
    masch, Apr 4, 2018
    #33
Thema:

Windows won't boot in UEFI mode, deleted EFI partition.

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