How to Create Bootable Windows 8.1 USB Drive from ISO Image
Download the ISO file of Windows 8 on your system.
A minimum of 4 GB removable drive for 32-bit Windows and 8 GB for 64-bit Windows 8 operating system.
Backup all the data (if any) from your removable drive. Better, backup important data on your PC too.
For more interesting updates please subscribe My Channel