.HDD File Extension
Parallels Desktop Hard Disk
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|Category||Disk Image Files|
What is an HDD file?
An HDD file is a virtual hard disk created by Parallels Desktop virtualization software. It stores the data for a virtual machine's hard drive. (For example, for Windows virtual machines, you can think of the HDD file as the Windows C:\ drive.) HDD files are used for loading a virtual machine's files when the machine is started.
HDD files are stored in .PVM virtual machine files. To view your HDD file, locate your PVM file, right-click it, and choose Show Package Contents. The folder that appears should contain an HDD file named harddisk.hdd.
NOTE: HDD files from version 2 of Parallels Desktop can be opened in Oracle VM VirtualBox. Other versions' HDD files cannot be opened in VirtualBox.
How to open an HDD file
Typically, HDD files are "opened" as part of initializing a Parallels Desktop virtual machine. However, you can manually open and examine the files contained within a Windows HDD file by mounting the file to your macOS machine using Parallels Mounter, a program included with Parallels Desktop. After you mount your HDD file, you'll be able to explore its contents in Finder.
To mount an HDD file to your macOS machine:
- Locate your HDD file in Finder.
- Right-click the file and select Open With → Parallels Mounter.
The volumes your HDD file contains will then appear in the Finder sidebar.