Windows Preinstallation Environment.
WinPE is a minimal Win32 operating system with limited services, built on the Windows kernel.
Different versions of WinPE include: 2.0, 2.1, 3.0, 3.1, 4.0, and 5.0.
The process of creation or deployment of disk images, which are computer files containing the contents and structure of either a disk volume or an operating system.