Imac7,1. Trying to install Montery, but installer hangs.

I have followed the tutorial up until installing Montery. The installer hangs about 2/3 into it. It briefly shows a black screen, then permanently hangs at a white screen. No options to do but a hard restart. After the restart, the newly installed partition is "Bootable", but locks up during its progress bar, hanging around the 1/2 way point. I have verified the installer twice, and retried the install twice per installer. Could there possibly be a simple step I have overlooked? Is this problem common? The end goal is to put Sonoma on it (No matter how terrible). Is there a different OS I can install from El Capitan and jump to Sonoma?

submitted by /u/Waldo_Schaeffer
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