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My version of Tiger is on four CDs, I'm not sure if that would work.

I see your problem. You would therefore need to locate your device's address in OF and then pinpoint the correct partition where the bootable media is located. I am not 100% this will work with a USB CD drive but it cannot hurt trying.

There are a few guides online. Here are three you could try although most are doing this with bootable flash drives or external hard drives.

http://ben-collins.blogspot.co.uk/2010/08/booting-your-ibook-g4-from-usb-stick.html

http://lifedigital2010.wordpress.com/2011/04/03/how-to-install-mac-osx-from-usb-on-powerbook-g4/

http://hints.macworld.com/article.php?story=20060301112336384

The last one seems the quickest but you do need to have a way of determining the partition your install media occupies in OSX, which means having access to another Mac.
 
Eh, I kinda gave up and stuck the combo drive back in the computer then out the other 160GB hard drive in the firewire enclosure. What I'd like to get now is a IDE Super drive. Anyone know where I can get one in the US for a reasonable price?

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Stick with any Debian-based distro like Xubuntu and you can't go wrong.

https://wiki.ubuntu.com/PowerPCFAQ

I'll try them out and see which feel the best for me. Right now I have Zorin 9.1 on my laptop and I like how that one feels. Also got Windows 7 cause not all my games are supported and I'm still learning Linux at the moment.

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Oh! I'd also like to get classic working again, how do I do that?
 
Holding Option at boot to select a USB device doesn't work on USB 2 machines like samusaran240's eMac. Nearly every DVD drive made since 1998 can read dual layer discs without a problem. If they can't, the lens is dirty or the laser is becoming weak. DVD-ROM equipped eMacs are no exception to this and can read dual later DVDs without a problem.

I'm not an expert but I've got a lot of PowerPC eMacs. I am going to have to disagree on this one. I just finished installing OS X Tiger on this machine via an external DVD drive. I selected that drive by holding the Option key when booting and selecting the drive.

Works great. I've never been able to install Leopard using a DL disk via the built in drives. Now, granted these are old eMacs. Maybe they are dirty lasers but my external drive does a great job of it.
 

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I'm not an expert but I've got a lot of PowerPC eMacs. I am going to have to disagree on this one. I just finished installing OS X Tiger on this machine via an external DVD drive. I selected that drive by holding the Option key when booting and selecting the drive.

Works great. I've never been able to install Leopard using a DL disk via the built in drives. Now, granted these are old eMacs. Maybe they are dirty lasers but my external drive does a great job of it.

You installed in on an older USB 1.1 eMac. Those don't need OpenFirmware commands and can boot from a USB device as easily as a FireWire device.
 
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