Copy the entire contents of the mounted ISO drive ( H:\) to your USB flash drive ( G:\). Mount the Windows Setup ISO by double-clicking on it. Now, Windows reassigns a drive letter ( G:\ in this example) for your USB drive. Once done, run the assign command, and then type exit to come out of the Diskpart command environment. To format the partition as FAT32, type format fs=fat32 quick, and then click ENTER. Important note: If your computer supports Unified Extensible Firmware Interface (UEFI), you should format the USB flash drive as FAT32 rather than as NTFS. Then run the following commands: create partition primary. Then, run the following command to completely erase the contents of the USB disk: clean. In my case, disk 3 is the USB drive, so I type the following command to select the disk: select disk 3. It’s better to disconnect additional external drives before running this command, for easy identification of the USB drive. Carefully, note down the disk # for your USB media. Run the list disk command to see the list of drives. Open admin Command Prompt run the diskpart command. Insert the USB flash disk into the drive. This is sufficient to make the drive bootable in UEFI-based computers.įor legacy (BIOS/MBR) systems, follow these instructions to create a Windows 10 Setup USB disk. you want to run a low-level utility Create USB Bootable Windows Setup Disk without using any softwareĪs said earlier in this article, for UEFI-based computers, all you need to do to make a Windows setup disk is to format the disk as FAT32, mount the ISO to a drive and copy the entire contents of the mounted drive to the USB drive. you need to flash a BIOS or other firmware from DOS. you need to work on a system that doesn’t have an OS installed. you need to create USB installation media from bootable ISOs (Windows, Linux, UEFI, etc.). Rufus is extremely fast, and this tool can be especially useful for cases where: This utility helps format and create bootable USB flash drives, such as USB keys/pen drives, memory sticks, etc. 
Rufus: An Advanced Tool to Create Bootable USB DrivesĪlso, look at an advanced ISO/DVD to USB tool named Rufus. The tool works only for the Windows ISO image downloaded from Microsoft. Please insert the USB flash drive (or DVD media) into the drive beforehand.
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