I was going to install OS X leopard (useing LeopardAssist) on my 400MHz PowerMac G4 when i remembered that its original DVD drive will not read the Leopard DVD so i got my Macbook 1,1 out and connected it in FireWire target disc mode only to find out that it's optical drive has gone bad
i then was thinking i would have no other choice but to buy a new DVD Drive for the G4 just to install Leopard, but then i remembered i had a external USB DVD Drive. i known a lot of people said PowerPc Macs will not boot off USB but i tried it any way and it worked! all i did was hold the Option key down and it came right up! needless to say it was a very slow install Over the built in usb 1.1 ports but it did work, i don't think this will work with every PPC mac that has USB or every usb device but i Booted the tiger install cd on a 500MHz iMac G3 as well so Booting from USB Useing the Option key is possible
. The DVD drive model is a LG Model GSA-E40L Here are some Pics i have the dvd drive open to show nothing is in the internal drive. and to People who say PPC macs can not be a main computer any more that's not true as this computer is now my main Mac i'm useing this Mac to Make this Thread running with 1.5GB Ram and the original ATI rage 128 pro with Tigers .kext for the rage 128 it works just Fine









