VMDK File Extension

VMDK file icon
Virtual Machine Disk Format
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What is VMDK file?

File with VMDK extension is a VMware virtual machine disk file. Such file contains files and folder that comprise a virtual disk created using Vmware software. Single VMDK file can contain information about one or more virtual disks.

What are VMDK files used for?

VMDK files are mainly used as means of storing data and creating backup copies of important data, and are basically a equivalent of physical disk drive. VMDK files also enable users to run multiple operating systems or virtual servers on single machine.

VMDK file specification

Each virtual disk is a separate VMDK file that can contain one or more files, depending on the disk contents and size. VMDK file can be configured for fixed or variable image size.

VMDK files that make up a virtual disk

Standard VMDK file is typically named as ‘vmname.vmdk’ (alternative names are also common):

  • vmname-s##.vmdk – files configured to support file size expansion,
  • vmname-f##.vmdk – files with disk space allocated during file creation process,
  • vmname-disk-##.vmdk – files that save changes made on the virtual disk running under virtual machine.

Conversion of a VMDK file

When you install one of the applications from the list of programs that you found here, you should be able to open or edit the file with the VMDK extension without any issue. However, if you still have problems with this, you may use the option of VMDK file conversion to a different format.

File Conversions from VMDK extension to a different format
File conversions from other format to VMDK file

We hope we helped you solve the problem with the VMDK file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the VMDK file (apart from the lack of the proper application installed).

First - the VMDK file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the VMDK file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the VMDK file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the VMDK file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the VMDK file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on VMDK file.

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