Create Bootable USB flash drive with no 3rd party tools

Steps to create Bootable USB flash drive with no 3rd party tools

1. Plug in a USB flash drive that has at least 8GB capacity.

2. Delete all partitions on the USB flash drive either using Disk Management ¹ ² or using Windows Settings => System => Storage => Advanced Storage Settings => Disks & Volumes

3. Using either of the methods above, create a 1GB FAT32 partition, let's name it BOOT🟨

4. Create a 2nd partition on the USB flash drive with the rest of the remaining unused space, formatted as NTFS, let's name this one DATA🟩

5. Mount your Windows ISO file by double clicking on it.

6. Select all and Copy everything from Windows ISO file to the NTFS partition (DATA partition🟩)

7. Copy everything from Windows ISO file, except for the "sources" folder, to the FAT32 partition (BOOT partition🟨)

8. Create a new folder in the FAT32 partition (BOOT partition🟨), and name it sources

9. copy the boot.wim from the "sources" folder inside the Windows ISO file to the newly created "sources" folder in the FAT32 partition (BOOT partition🟨).

10. That's it, your USB flash drive is ready and bootable.