Boot the non-operating-system computer from the bootable drive.Create a bootable media, which can be an ISO file, USB flash drive or CD/DVD disc.You can rely on Windows PE (Preinstallation Environment) to boot the computer. But how to make it happen if your computer has no operating system or OS fails to boot? Such a problem has been resolved already. You can easily format, partition, or wipe a partition within the Windows OS. PAGE CONTENT: Create a Bootable Drive to Start Computer Without OS in WinPE How to Format Hard Drive Without OS How to Partition Hard Drive Without OS How to Wipe Hard Drive Without OS