How can you get OSX if your hard drive crashed and you don't have the original DVD anymore? Yesterday my HD died. I thought about buying a new disk and reinstalling, but I can't find the original DVD that came with the machine (it's a MacBook 5.1, it came with 10.5). Suppose I want to buy and install a new operating system, how can I do it, considering that boxed dvds are no longer sold?
In the past AppleCare has been able to send replacement system discs.  I would assume the same holds true today but my only doubt stems from the age of the Mac, since it may be unsupported by AppleCare.  It's definitely worth a call though...


Call 1-800-APLCARE (Or find your Apple support number HERE if you're outside of the US/Canada)
Give them your serial number (found on your Mac, underneath your battery)
Explain that you have misplaced the gray system discs that came with your Mac and that you need replacement discs in order to reinstall your operating system.


Hopefully they are still able to provide replacements!