I recently got a Powerbook 1400 for free. It boots up, but takes me to a grey screen with a floppy disc and a question mark icon. As I understand it, that means there is no OS installed, right? So how can I install the OS? I do not have access to another Older Mac. I know you can download 7.5.1 (or something like that) from Apple, but it's in 19 parts and I have no idea how to go about getting that onto a CD. I do not have a floppy drive for this Powerbook--only the CD-Rom. Is there anyway I can install the OS, preferably for free? (Note: No illegal methods here...I'm talking about what you can legally download from Apple). Thanks for your help. Edit: I just read this thread: http://forums.macrumors.com/showthread.php?t=211689 Which offers some help, but I still can't figure out exactly what to do. Is there an easy way to download the OS, burn a CD in OS X disc utility, and have the Powerbook 1400 boot with it? Can anyone provide step-by-step instructions? Sorry for all the questions...not really well-versed in Macs before OS X.