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.VMDK File Extension

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File TypeVirtual Machine Disk File

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Rare Uncommon Average Common Very Common
CategoryDisk Image Files


File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.


Virtual disk that stores the contents of a VMware virtual machine hard disk; can be accessed as a physical hard disk with VMware software; typically named "[vmname].vmdk;" may be set at a fixed size or configured to grow over time using VMware's Virtual Disk Manager.

More Information

Other files that make up a virtual disk may include:

  • [vmname]-s[###].vmdk - for split virtual disk files.
  • [vmname]-f[###].vmdk - for split files with disk space allocated in advance.
  • [diskname]-[###].vmdk - stores changes made to a virtual disk.
Early versions of VMware software used the .DSK extension for virtual disk files.

VMDK files are used by VMware software, but can also be mounted as a virtual disk using WinMount. Once the VMDK file has been mounted with WinMount, users can delete, copy, and modify files in the virtual disk.

Programs that open VMDK files
VMware Workstation 12
WinMount International WinMount
Oracle VirtualBox
Gilles Vollant WinImage
VMware Fusion 8
Oracle VirtualBox
VMware Workstation 12
Oracle VirtualBox
Updated 3/24/2015