How to Install Windows 8 from USB flash drive

9:42:00 PM | ,

Windows 8 build 7850 has recently been leaked and most of you would like to install it. You can install it by writing the image file to a DVD but here we are going to explain how to install Windows 8 from a USB Flash Drive. We have tested 2 methods and both of them work fine.
First the System Requirements
  • 4GB removable USB flash drive
  • A Windows 8 ISO file
  • Windows XP SP2, Windows Vista, or Windows 7 (32-bit or 64-bit)
Method 1
In this method we would be using the command prompt method to make a bootable USB Flash Drive.
Step 1: Run the DiskPart utility by typing diskpart at the Start menu search box.
Step 2: Run the list disk command to check the status of your drive.
Step 3: Run select disk 1 where the "1" is actually the corresponding number of your USB drive.
Step 4: Run clean.
Step 5: Once the thumb drive is clean,run create partition primary.
Step 6: Make the partition active by entering active
Step 7: Run the command format fs=NTFS quick to format the USB Flash Drive
Step 8: Run the assign command which gives the USB drive a drive letter
Step 9: Extract the Windows 8 ISO file using the WinRAR utility
Step 10: Now copy the contents of the file from extracted ISO file to USB flash drive 
Method 2
This is the simpler method and we would be using Windows 7 USB/DVD download tool to install Windows 8.
Step 1: Download Windows 7 USB/DVD download tool from here and install it.
Step 2: Run the tool and in the SOURCE FILE box, type the name and path of your Windows 8 ISO file, or click BROWSE and select the file from the OPEN dialog box. Click NEXT.
Step 3: Select USB DEVICE to create a copy on a USB flash drive.
Step 4: If you are copying the file to a USB flash drive, select your USB device in the drop-down list and click BEGIN COPYING.
Only 4 steps were required and your bootable USB flash drive would be ready.
Once completed you would see the USB Flash drive with the icon as shown in the image below.
After you have created a Bootable USB flash drive change the BOOT order in BIOS to boot from your USB drive first