Which versions of macOS can run in a VM? Can they run Intel apps too, and Intel macOS? How well do they perform? Can they access iCloud and run App Store apps?
virtualisation
Which versions of macOS can you ‘dual boot’, should you install them all on the internal SSD, or is a bootable external disk better, and when would you need to virtualise?
From the start of the fourth cycle in M4 Macs and the smallest ever, through the omission in macOS VMs, and QuickLook shortcomings, to the stealth firmware update.
Can you promote threads set to run on E cores so they run on P cores instead? Can you demote threads set to run on cores so they run in the background on E cores?
The macOS 15.2 update includes the second phase of AI support for Apple silicon Macs, introducing the Image […]
Discovering whether using more threads makes a task faster gives insight into where its performance is limited. How to use a VM to investigate this.
A bug, most probably in the early part of kernel boot in guest macOS, prevents M4 Macs virtualising macOS prior to 13.4.
macOS virtual machines are preferentially run on P cores. Details on their performance, core allocation, frequencies and power use/
periodic has been removed from Sequoia. AI doesn’t appear to activate in macOS 15.1 VMs, and they may get a surprise update intended for M4 Macs.
Step by step guide to building and installing a VM running macOS 15.0 Sequoia with Apple Account access to iCloud, and updating XProtect.
The Eclectic Light Company 