Me too!
The only plausible suggestion that I've seen so far is to install Ventura on the separate volume, boot into it, and then upgrade to Sonoma. I've not tried that yet.
I don't know what use the downloadable .ipsw file is. Maybe it can be used with a virtual machine, or something?
If anyone has got Sonoma working as a dual-boot option, either on an external drive or a separate volume on the internal storage, please give us a clue how you did it!
Thanks!
Topic:
App & System Services
SubTopic:
Core OS
Tags: