For my late 2009 iMac, had to build a usb installer following the instructions on the OCLP website, and then do the post installation patches as instructed. For my mid 2010 MacBook Pro, had to also build a usb installer for it, but that needed a 2.0 usb dock and a wired keyboard and mouse to be able to do the post installation patches, because after sonoma was installed on my MacBook pro, the keyboard and trackpad no longer worked, after using the 2.0 usb dock and a wired keyboard and mouse and did the post install patches, keyboard and trackpad came back to normal along with the keyboard back lighting as it should, and works perfectly fine, using the MacBook pro in my local mcdonald's to type this post.