Microsoft has released a tool that lets netbook owners install Windows 7 on their machines using a USB flash drive, sidestepping the usual requirement of a DVD drive.

The utility, Windows 7 USB/DVD Download Tool, creates a bootable flash drive from a downloaded .iso file, or disk image, of Windows 7, and can be purchased from Microsoft's online store.

"This tool allows you to create a copy of the .iso file to a USB flash drive or a DVD," said Microsoft in the instructions accompanying the tool. "To install Windows 7 from your USB flash drive or DVD, all you need to do is insert the USB flash drive into your USB port or insert your DVD into your DVD drive and run Setup.exe from the root folder on the drive."

The USB/DVD Download Tool solves the problem facing netbooks users who want to upgrade to Windows 7, since virtually all netbooks lack a DVD drive. Earlier this year, rumors circulated that Microsoft might offer Windows 7 upgrades on a flash drive, but the talk turned out to be nothing but wishful thinking.

Full story: Computerworld