How to increase the size of the hard disk used by the Virtual Machine Manager (VMM) vm

scvmm

In Virtual Machine Manager admin console, I used the 'New virtual machine' wizard and created a machine from an existing template.

When I got to the Configure Hardware step, I selected the primary hard disk (which is a dynamic) disk and tried to increase it's maximum size, but this control is disabled so I can't increase it.

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It's not big enough for my purposes. how do I increase the maximum size of the hard-disk?

Thanks.

Edit: I am able to add a second hard disk of a size I specify. That's not useful though as I'm trying to install some software, some of which insists on being on drive C.

Best Answer

Virtual disks cannot be edited when the virtual machine is running or in a saved state. Stop the virtual machine, then try again.

A virtual disk also cannot be edited when any checkpoints exist. You will have to delete all existing checkpoints to be able to resize the disk. However, the Channel drop-down list is only disabled (as in the above screenshot) when the VM is running.

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