Error – Unsupported and/or invalid disk type 7

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By | 13 April 2017

When setting up my lab, I wanted to recover a number of virtual machines that power on my old server.
I encountered an error “Unsupported or invalid disk type 7” when I started these machines because they were created with VMware Workstation!

error invalid disk type7

To correct this problem, you will have to convert the disk “* .vmdk” so that it can be in the correct format.

How to convert the disk ?

Connect you onto the server in SSH.

  • Move to datastore with command line

error invalid disk type 7_2


  • Rename the original vmdk


  • Execute this command line to change vmdk format (This operation will be clone your original VMDK file.)


Next step, you need to add new existing hardware disk and select this new one.

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Hi ! I’m Maxime. Founder and independant author of I have worked in service IT since 3 years ago, after a 5 years’ internship. Via this blog, I would like share and discuss with you on new technologies, especially on virtualization and VMware.

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