So,
now you’ve a hard drive taken from an eMac inside the Yikes?
You attempted to install Universal 9.2.2 on that eMac HD and it failed?
Universal CD-R in the machine & booted with option key / machine doesn’t see CD-R?
How is / are the jumper(s) set on the now newly installed eMac’s HD?
Start over.Power up the Yikes, holding down on the mouse until CD drive opens.
Place the Universal CD-R into the machine and then power it down.
(Unplug it if you have to.)
With the CD-R still in the machine, then power it up - holding down option / ALT key.
(And if it spits the CD-R back out, push it back in while still holding down the option / ALT.)
Sometimes seems that it does take forever to boot and requires extreme patience.
ALL above with ONLY bare minimum hardware. (Keyboard, monitor, mouse.)
Nothing other than a single video card and no external peripherals, network, etc.
Might check / change where you have your mouse connected too.
Keyboard - OR direct into USB port on the machine.
IF you can then boot from the CD-R… initialize and format the eMac HD again.
And try another install.
If you’re also attempting an OS 9 install on THE eMac, that’s a whole other
can o’ worms which requires the Unsupported OS 9 DL and Open Firmware fun.