My old post got deleted because I failed to mention I bought my dad's copy of Tiger, and copies of legally obtained software for backup use are not copyright violations. I've got an old iBook G4 that was still running Panther. It still runs fine, but I can't really do anything on it since not many new programs run on it. I had my dad make a copy of his Tiger disc to send to me online. I got it in .dmg format, converted it to .iso on a PC (no DVD burner on the iBook) and burned it with Roxio. The DVD loads perfectly fine in the iBook, but it refuses to boot. Is there a step I missed when converting and burning it? The part I understand the least is when I open the Startup Disk preferences pane, the install disc shows up, but when I try and boot from it, all I get is the missing OS icon. Then it gives up and boots normally.