The File Extensions Database

.HDD File Extension

  • Developer by: Parallels
  • Category: Disk Image Files
  • Format: Binary

What is an .HDD file?

.HDD is Parallels Desktop Hard Disk File

Virtual hard disk created by Parallels Desktop virtualization software; stores the data for a virtual machine's hard drive (you can think of it containing the Windows C:\ drive for Windows VMs); used for loading the VM's files when the VM is started.

HDD files are stored within .PVM virtual machine files. To locate your HDD file, right-click the PVM file and choose "Show Package Contents." The folder that is opened has an HDD file with the same filename prefix as the PVM file.

To recover files within an HDD file manually, you first mount HDD files manually with Parallels Mounter, a program included with Parallels Desktop (located in /Library/Parallels/). Next, right-click the HDD file and choose Open With → Parallels

NOTE: Older versions of HDD files from Parallels Desktop version 2 can be opened by Oracle VM VirtualBox.

Programs that open Parallels Desktop Hard Disk File
Parallels Desktop 14 for Mac

How to solve problems with HDD files

  • Associate the HDD file extension with the correct application. On :
    Windows: Right click on any HDD file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.HDD files". Mac: Right click (or Ctrl-click) the HDD file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .HDD is Parallels Desktop Hard Disk File. Because only the current version supports the latest HDD file format. Search, therefore, e.g. on the Parallels manufacturer website after an available .HDD is Parallels Desktop Hard Disk File update.
  • To make sure that your HDD file is not corrupted or virus-infected, get the file again and scan it with antivirus software.