File Type Parallels Desktop Hard Disk IconParallels Desktop Hard Disk
File Format Proprietary (Parallels)
Usage Referenced by an application; not meant to be opened manually; may run a program or script when opened
Popularity ★ ★ ★ ☆ ☆  Average

Virtual hard disk created with Parallels Desktop, a program that allows Windows and other operating systems to run on a Mac; saves all the data for the system in a virtual disk that can only be read by Parallels Desktop software.

Examples of virtual hard disk files include "app.hdd," "data.hdd," and "swap.hdd." These three virtual disks may be used to create a "virtual appliance."

Open With

IconParallels Desktop for Mac

Updated October 28, 2008
Information from the PC File Extensions Reference