Hello to all,
iMac 13,2 - late 2012 and metal capable.
Installed Tahoe 26 beta2 on a volume (not partition) on an external drive; internal drive, the original Fusion HDD, was greyed out in the target listing offered by installer (?)
Which method worked:
I borrowed a page from playbooks by HDVS, Deeveedee, oldluckyman, and of course developers.
Created new volume (not partition) on external SSD.
Installed Sequoia 15.5 on the new volume on the external drive, but did not patch it. OTA Software update, for some reasons, routinely fails to initiate or complete when patches are applied.
Next step was to secure OCLP 3.0.0 nightly, and replace both, OCLP 2.4 EFI and OCLP 2.4 application with the OCLP 3.0.0 nightly versions of same items. Again, no patching was executed due to potential for software update failure.
Initiated OTA installation of Tahoe 26 beta2 over the 15.5 sequoia. Process was glacial, but did result in functional login window and allowed boot onto the desktop.
Noted many graphical artifacts, with iconservicesagent maxing out the CPU usage; on several occasions I force-quit that process with Activity Monitor to allow other processes to complete.
Attempted to patch installation with OCLP 3.0.0 nightly, but process failed with message: “Unsupported host OS” and greyed out “Start Root patching “ selection button.
Unpatched, Tahoe 26 beta2 does allow Ethernet connection, but WiFi is inactive. Bluetooth is functional. Safari works and connects to internet. There are, however, many graphic artifacts and, of course, no graphics acceleration.
I will try installing Tahoe on the non-metal capable 2009 MacBook Pro; a dedicated KDK for Tahoe is available on the Apple developer site.
Congratulation to the development teams and testers. Overall good beginning for such an early foray into the Tahoe beta2 territory.
Hope this information may be of help
Note graphic artifacts in above screenshot.