A 4GB flash drive, or 8GB for the 64-bit version. Rufus, a free utility for creating bootable USB drives. Here's how to install the OS from a flash drive: The Windows 10 experience starts here.

Not every program has a "portable" counterpart, but it's still possible to use your flash drive to make many of your favorites mobile.

Blogger Kurt Shintaku figured out how to install Windows Vista from a USB flash drive, a potentially huge time-saver for anyone needing to deploy the OS on multiple machines.

Did you know that a full copy of Windows can be installed and run from a USB drive? Microsoft introduced "Windows To Go" with Windows 8 Enterprise ...

From the Hardware 2.0 mailbag: Can you install Ubuntu on a USB flash drive?Yes, yes you can. Here's how.

Getting Lion from the App Store is convenient, but if you want a physical copy of the installation, you can easily make your own Lion install DVD or USB drive with Disk Utility.