How to resize a VirtualBox vmdk file

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software.

VMDK (Virtual Machine Disk) is a file format that describes containers for virtual hard disk drives to be used in virtual machines like VMware Workstation or Oracle VirtualBox.

In the earlier post we have looked at how to install Ubuntu on Oracle VirtualBox.There could be scenarios where in you would run out of space on Virtualbox and need to resize the virtual image, following steps would help you to resize VMDK file.

  1. Add “VirtualBox Installation location” to the Path variable
  2. We are going to use VBoxManage command line interface to resize the disk. With VBoxManage, you can completely control VirtualBox from the command line of your host operating system. VBoxManage supports all the features that the graphical user interface gives you access to, but it supports a lot more than that.

    VBoxManage command
    Image – VBoxManage command
  3. For resizing the disk,first convert the vmdk file to vdi format using following command VBoxManage clonehd "ubuntu1864.vmdk" "cloned.vdi" --format vdiHere ubuntu1864.vmdk is the file which we are going to resize & cloned.vdi is intermediate file in vdi format.

    Convert the vmdk file to vdi format
    Image – Convert the vmdk file to vdi format
  4. Then resize the vdi file to required size using following command VBoxManage modifyhd "cloned.vdi" --resize 51200Here cloned.vdi is intermediate file in vdi format.

    Resize the vdi file to required size
    Image – Resize the vdi file to required size
  5. Next step is to convert the vdi file back to vmdk file using following command VBoxManage clonehd "cloned.vdi" "ubuntu18641.vmdk" --format vmdkHere ubuntu18641.vmdk is the resultant file & cloned.vdi is intermediate file in vdi format.

    convert the vdi file back to vmdk file
    Image – convert the vdi file back to vmdk file
  6. Once the conversion & resize is completed,we would need to download GParted Live CD to resize the disk.On your VirtualBox Storage settings,set Gparted Live CD and boot the image.

    Set Gparted Live CD and boot the image.
    Image – Set Gparted Live CD and boot the image.
  7. On the GParted boot screen,choose default settings.

    choose default settings.
    Image – choose default settings.
  8. Resize the disk using the slider per your needs.

    Resize the disk
    Image – Resize the disk
  9. Choose ‘Apply Changes’ and Resizing would be complete.

    Resizing complete
    Image – Resizing complete

Congrats! We have now resized the disk, continue using VirtualBox.

Like this post? Don’t forget to share it!

Additional Resources :

Summary
How to resize a VirtualBox vmdk file
Article Name
How to resize a VirtualBox vmdk file
Description
VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use.Here we look at how to resize a VirtualBox vmdk file
Author

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.