The PeToUSB is a lightweight application that aims to convert USB memory devices in bootable disk drives. In addition, allows you to partition and format these drives in a moment. Technicians who use the WinPE/BartPE can rely on this tool to make maintenance on systems even more practical and fast.
The program has no secret, just inform you about which Setup PE (pre-installation environment) will use and start recording. The creation process takes a while, accepts only units of up to 2 GB capacity and utilises FAT16 formatting. After the copy, simply set the USB drive as primary boot on the machine that will use the drive, for example, and connect it to PC.
Before any changes, you can make a backup of the MBR of the drive, enabling a later restore if a problem is encountered. Because it is an advanced tool, requires certain degree of user experience. Therefore, do not use the program if you are not aware of what you're doing, because a simple click in the wrong place can erase all data from your USB device.