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I have Ubuntu 20.04 installed and I want to dual boot Windows 10. I downloaded the official ISO and flashed it using dd. The ISO was correctly flashed and verified with MD5. The dd command was:

sudo dd if=Win10_2004_EnglishInternational_x64.iso of=/dev/sdc bs=4M status=progress conf=fdatasync

On my PC (ASUS H97), it is not visible in the BIOS as a bootable drive. It is recognized as a "Mass Storage Device" and I cannot boot from it. I suppose this is because of the UDF format Microsoft uses. When I flash the drive as NTFS and copy paste the ISO files it is correctly recognized, but still won't boot.

Also, when I try to flash the ISO with etcher, the official Windows ISO, etcher complains

It looks like this is not a bootable image. The image does not appear to contain a partition table, and might not be recognized or bootable by your device

I have the grub bootloader. Everything is updated to the latest version. How do I boot the Windows 10 installation?

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  • See wikihow.com/Install-Windows-from-Ubuntu for use of unetbootin . BTW, you do have a vlad license?
    – DrMoishe Pippik
    Commented Oct 18, 2020 at 19:04
  • @DrMoishePippik You don't need a license to download and flash the ISO. But I do have a couple.
    – jan
    Commented Oct 18, 2020 at 19:20
  • Unetbootin doesn't recognize my USB drive...
    – jan
    Commented Oct 18, 2020 at 19:29
  • no, you need a license to use Windows after installing it... but you should be OK. As for the USB drive not being recognized, perhaps it's damaged or needs to be formatted... which could explain the issues you're having.
    – DrMoishe Pippik
    Commented Oct 18, 2020 at 19:32

1 Answer 1

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You can't create bootable windows usb simply by dd command as win iso images are non-bootable images(unlike linux iso images which are bootable).

Use WoeUSB

To install WoeUSB on ubuntu

sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt update
sudo apt install woeusb

For alternatives/other methods see : how-can-i-create-a-windows-bootable-usb-stick-using-ubuntu

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