Hi, you're out of luck for 10.5 without an Instaal Disc.
Far cheaper to get 10.6.x
* Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor
minimum system requirements
* 512MB of memory (I say 1.5GB for PPC at least, 2-3GB minimum for IntelMacs)
* DVD drive for installation
* 9GB of available disk space (I say 30GB at least)
Classic/OS9 Apps no longer supported.
Trouble is Apple no longer sells it, check eBay & such for the Retail version, not the Gray Discs...
You have to call Apple & likely ask for a Product Specialist to get it, if they still have it! Helps to tell them you have an iPad/iPhone & you can't run 10.6.
There are workarounds if the 867MHz CPU is the only hangup...
List of Applications Not Compatible with Leopard...
First you need to research all the problems people are having with the higher OSX versions, & make sure you have a bootable clone of what you have just in case.
then you must get 10.6 if they still have it, install it & update to 10.6.8 so you have the App Store to buy & download the huge 10.8 Installer.
Snow Leopard/10.6.x Requirements...
* Mac computer with an Intel processor
* 1GB of memory (I say 4GB at least, more if you can afford it)
* 5GB of available disk space (I say 30GB at least)
* DVD drive for installation
* Some features require a compatible Internet service provider; fees may apply.
* Some features require Apple’s MobileMe service; fees and terms apply.
Which apps work with Mac OS X 10.6?...
It's been pulled from the online store & Apple Stores, so you have to call Apple to buy it, last I heard.
Buy Snow Leopard > http://store.apple.com/us/product/MC573/mac-os-x-106-snow-leopard
Call Apple Sales...in the US: 1-800-MY-APPLE. Or Support... 1-800-275-2273
It looks like they might still have it...
If it's a core Duo & not a Core2Duo, then it'll only run in 32 bit mode.
Just cuz I don't really get all this computer stuff I need to make sure I understand what your saying.
1. Leopard install disk is gonna be impossible to find.
2. Because of that I should install snow leopard, but I need the retail disk not the gray one.
My question is, if I install snow leopard will it wipe the hard drive clean of all the stuff of the original user and basically give me a "new" computer. That's my main focus here. I want to get rid of all the files my friend has on this computer and start clean without having to go in and remove everything by hand. I can do that with any other idevice like my 4s or my iPad touch by restoring factory setting, but can I do that with this MacBook by doing what you said? Thanks in advance for clarifying.
Yes... But Leopard Discs are expensive, not impossible to find, the eBay link should give you an idea.
How to format your disks...
(To Install OSX on an IntelMac the Drive it needs the GUID Partitioning scheme mentioned at the bottom.)
Thanks to Pondini, Formatting, Partitioning, Verifying, and Repairing Disks...