The Windows Developer Preview is a pre-beta version of Windows 8 for developers released today. In this guide i will show you How to Create and Install Windows 8 from Bootable USB Flash Drive with an ISO Image File. This tutorial might be helpful for all those netbook users who want to test Windows 8 on their netbooks as these don’t come with DVD ROM. Things you need to have before following the instructions : Windows 8 ISO USB Flash Drive (Min. 4GB) MBRWiz (only Command line version is freeware) MagicDisc for ISO Mounting How to Create and Install Windows 8 from Bootable USB Flash Drive with an ISO Image File Step 1: Plug your USB Flash drive into computer and format it. Step 2: Now open command prompt by going to Start Menu,Choose Run and type CMD. Now type following command there convert j: /fs:ntfs (Where “j” is your USB drive letter) Step 3: Now Mount Windows 8 ISO as drive with Magic Disc Step 4: Again open Command prompt and browse for the directory where you have installed MBRWiz. Run following commands Mbrwiz /list (please note the disk number of USB flash drive) Mbrwiz /disk=X /Active (X is disc number of your USB flash drive) Exit Step 5: Now open another command windows and type the commands below: K: (Drive letter of Windows 8 ISO mounted with magicdisc) CD boot bootsect /nt60 Y: /mbr (Y is drive latter of your USB drive ) Step 6: Now Copy files from Windows 8 ISO drive to disk drive and reboot your system and go to BIOS and select USB drive as your first boot drive. That’s it, Now complete the installation.