Extending a Drive
Posted by Joseph Quintero, Last modified by Preston Gross on 22 July 2014 02:32 PM

Extending a Drive in Windows Server 2003 and Above

*In Windows 2003 you must use the Command Prompt*

*In Windows 2008 or above you can use the Command Prompt or the Windows Server Manager*


Before extending the drive you must give the VM more storage, do this by:

Logging into Vsphere, finding the VM, right click the VM, Click "Edit Settings". From here either add a drive or extend an existing one.

Add or Extend, that is the question:

Add when the VM absolutely cannot be rebooted

Extend an existing whenever possible, but will require a reboot


Command Prompt Script:

Open a Command Prompt

"Disk Part"

"List Disk" or "Lis Dis"

"Sel Dis #" *#=whatever disk you are wanting to extend*

"Lis Vol"

"Sel Vol #" *#=whatever volume you are wanting to extend*

"Extend disk=#" *#=whatever disk you are wanting to extend*


Server Manager: (only in 2008 or above)

Open Server Manager, Disk Manager, right click drive and click "extend"



If the job fails you will need to boot into Bart.


Boot to bart open a command line and run the commands. Image attached show this.

 seven.jpg (190.69 KB)
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