On 7/19/05 7:52 AM, Richard Gilmore <rgilmor at uwo.ca> wrote: > Hi I¹ve got a friend who¹s got one of the first generation iMacs a 233 with > the CD drive that pops out. He¹s trying to install Tiger but gets an error > that says it cannot be installed for whatever reason. It doesn¹t have Firewire > on it and he¹s trying to install it through an external DVD via USB. Built-in FireWire is one of the requirements for Tiger. This is listed on the retail box and on Apple's web site: http://www.apple.com/macosx/upgrade/requirements.html The HARMONi G3 may solve this problem but I would inquire with Sonnet Technologies as to whether it is Tiger-compatible. http://www.sonnettech.com/product/harmoni_g3.html Also, I don't think you can boot via USB. Eddie Hargreaves