Sep 23, 2009

How to increase disk space on a Windows VM

Wow, look at this! Two posts in one week! What the hell happened? I used to bring you daily geeky goodness, but now you are reduced to two lousy articles a week? I digress.

Anyway, back to the purpose of this article which is how one goes about adding more disk space to a Windows virtual machine in VMWare. Now I found this article which talks about doing this using a Knoppix live CD, however I found an easier way, and it is built into Windows.

All you have to do is the following:

  1. Power down you virtual machine
  2. In your VMWare manager (vSphere, etc.) edit the VM’s settings
  3. Increase the provisioned size of the disk and click OK
  4. Power on the virtual machine
  5. Verify in Disk management that the VM sees the new unformatted disk space
  6. Open a command prompt (In Vista/2008 as Administrator)
  7. Run diskpart
  8. Type list volume
  9. Type select volume <volume number>
  10. Type extend
  11. Type exit

That’s it. No live CD. No nothin’! Just more disk space!

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