IMPORTANT: Changing the disk size for a clone will break image chaining/“layer sharing” between the clone and its source. You’ll want to modify the source VM Template first, then clone it to a new VM.

Post-modify, you need to tell disk utility to modify the VM’s disk to consume the new free space: anka run {vmNameOrUUID} sudo diskutil apfs resizeContainer disk0s2 0

It’s currently impossible to downsize a VM’s hard-drive. We suggest creating your initial VM Template with a smaller amount of available disk and then increase in subsequent Tags.