Buck, that Pioneer drive should work just fine. Are you going to try to install it in the eMac or are you going to get an external FW/USB case for it?
BTW - if you opt for an external case, you need to look for a 5.25"
FIREWIRE/USB 2.0 - you cannot boot from a USB 2.0 drive with that particular Mac. Even if the Mac sees the Playstation, it can't boot from it, as it's USB 2.0.
Anyway - if you do opt for an external case, here are a couple of options:
http://eshop.macsales.com/item/Other%20Wor...uting/MRFWU2OB/They also sell the Syba enclosure, for a good deal less. Customers at NewEgg commented that it came with a lousy FW cable, so if you go for the Syba, get it at NewEgg and order a FW cable too:
http://www.newegg.com/Product/Product.aspx...N82E16817801003http://www.newegg.com/Product/ProductList....amp;Order=PRICE(you will need the 6 pin to 6 pin cable - just need to decide on the length)
If the Syba cable does work, well, no big expense! Stores like Best Buy charge an arm and a leg for cables, so that's why I'm recommending just getting a spare *in case* if you order the Syba enclosure.
I want to go external. But I didn't know I need to add a case to the drive or these other cables. As I stated, I know little of what needs to be done. I'm confused, which is quite often.