Subj : The latest M4 Macs have a pretty major shortcoming when it comes
To   : All
From : TechnologyDaily
Date : Tue Nov 19 2024 16:45:04

The latest M4 Macs have a pretty major shortcoming when it comes to running 
VMs

Date:
Tue, 19 Nov 2024 16:29:00 +0000

Description:
Trying to run older versions of macOS as a virtual machine? You might want to 
hold off on your M4 upgrade.

FULL STORY
======================================================================M4 Macs 
are having problems booting VMs with macOS versions prior to 13.4 VMs seem to 
be booting in one core, and failing Apple has not commented on the issue 

Buyers of Apples latest M4 Macs have noticed they are unable to run virtual 
machines with macOS versions older than Ventura 13.4, causing a headache for 
developers, security workers and legacy software users who want or need to 
use older versions of macOS. 

The problem is extending to the latest family of Macs introduced in the week 
commencing October 28, including the MacBook Pro, Mac mini and iMac. 

Researcher Csaba Fitzl (via The Eclectic Light Company ) noted virtualization 
software fails to boot older macOS versions on the latest hardware, but it 
could just be a bug and not an intended limitation. M4 Macs cant virtualize 
old versions of macOS 

Those trying to load versions before macOS 13.4 will notice that theyre 
served a black screen, and the VM fails to boot. The error only occurs on M4 
Macs, meaning that those looking to upgrade from M1, M2 or M3 Macs should 
hold off until a fix is issued. 

Because the VM doesnt boot, researchers are unable to access logs to 
understand where its going wrong, however investigation of the Activity 
Monitor app implies that the VM is only booting on a single core despite 
being allocated multiple cores. 

While this compatibility issue may have dampened the launch of M4 Macs, the 
companys latest macOS Sequoia introduces improvements for virtualization, 
including iCloud login support for VMs, which was previously unavailable. 

The operating system also includes a series of generative AI features, many 
of which have already rolled out and many more are set to follow in other 
regions soon. M4 chips are the most optimized for these features to date. 

 TechRadar Pro has asked Apple whether this is an intentional limitation or 
whether its working on a fix, but we did not receive an immediate response. 
You might also like Apple's M4 Pro chip is so powerful it puts the Mac Pro to 
shame Fancy a new machine? These are the best Macs Check out the best cloud 
computing services



======================================================================
Link to news story:
https://www.techradar.com/pro/the-latest-m4-macs-have-a-pretty-major-shortcomi
ng-when-it-comes-to-running-vms


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