How to Properly Install Windows 10 UEFI from an ISO File on USB from Legacy Mode – Also Applies to Windows 7, Windows 8, 8.1

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[Hi everyone!
There are already plenty of guides to installing Windows 10 UEFI one way or another. Today Lang Khach introduces an installation method that may not be new, but that many of you are probably not yet familiar with: the method Lang Khach often calls the “standard install”.
A – PREPARATION:
1. A UEFI-bootable USB drive; you can see the guide here
2. The original Windows 10 installer, which you download
3. A computer that supports UEFI mode.
B – STEPS:
1. Enter the BIOS and set the boot mode to UEFI, then choose to boot from the USB in UEFI mode:
 

2. Select Windows 8 PE (anhdv):

 
3. Open the Mini Tool Partition Wizard software.

4. Right-click the hard drive, select Convert MBR Disk to GPT Disk, then click Apply to perform the conversion.

5. Delete partition C: to prepare for installing Windows on it (remember to back up any personal data on partition C: first):

Once it is deleted, the first partition of the hard drive will show as Unallocated as in the image, and you are good:

6. Navigate to the Windows 10 installer ISO file on the USB, select Open with Windows Explorer to create a virtual drive:
7. Open the newly created virtual drive containing the Windows 10 PE installer, run the setup.exe file, then choose the options shown in the images below:

8. Select the first partition of the hard drive that we prepared, which is now Unallocated, then click Next to install:

9. The remaining installation steps are very simple and proceed completely as normal:

then wait for it to finish booting, and you have succeeded