macOS VM on M1 Mac: How to configure

MatthiasS9 · Oct 18, 2021

So I have manged to create 2 macOS VMs on my M1 Mac. None of these show any way to properly configure the VM. Both claim to have 28GB disk space, after installation of macOS 12 beta 6 both VMs have ~9.5 GB free space - insufficient to install newer macOS beta updates

How can I grow the disk of these VMs, allowing me to update to recent beta versions?

When will we get a Parallels version that allows to properly configure the VMs and create snapshots? The current functionality of Parallels on M1 Macs is clearly insufficient.

MattD14 · Oct 19, 2021

It's not easy or documented yet, but it is possible: http://blog.rolpdog.com/2021/08/customizing-macos-guest-vms-in.html

MatthiasS9 · Oct 20, 2021

Good to see there are already two options to the command that creates a VM, now they just need to add something for
- the modelID
- the number of CPUs
- the memory size
- the serial number
- the network type
- the MAC address
- the board_ID?
- ???

alev · Mar 14, 2022

CPU, RAM, Network size, Resolution can be changed now:
https://kb.parallels.com/en/128842

jamiem10 · May 14, 2022

How about setting the serial number of the VM?
This is one of the most useful parts for testing/debugging DEP profiles

LukasD4 · Sep 8, 2022

Any timeline when setting of SerialNumber will be supported for macOs guest on M1? (Parallels 18)

GabrielM14 · May 26, 2023

alev said:
CPU, RAM, Network size, Resolution can be changed now:
https://kb.parallels.com/en/128842

I can't seem to change the CPU core count, nor the memory. Whatever values I put in the config.ini, the configuration is unchanged.

alev · May 27, 2023

Hi Gabriel,

We updated the KB based on the 18.3.0 where command line support was added to change parameters. You can also change them in config.pvs now.