That sounds like way to much trouble to me. But why exactly is Leopard incompatible? Turns out it's not—mostly anyways. The one actual compatibility issue is that Mountain Lion is only available in the Mac App Store, which is available in Snow Leopard onwards. However, if you have an alternate machine to make the purchase on, or you have put, there's actually no technical reason why Mountain Lion wouldn't work.
Note: due to abuses, registration is now required to edit the list. Thanks for your. 'AccountEdge 2009 is compatible with Mac OS X 10.6 with two (2) known issues.' ACDSee, 1.1 Beta. Snow Leopard installs an older, less secure version. (No comment). Camfrog Video Chat, 1.9, OK.png.
One way to get this to work is to do a clean install of your Mac, backing up all of your files first, then transferring them over once you've installed the new OS. However, came up with a much quicker and easier method to 'tricking' your Mac into thinking it already has Snow Leopard installed. However, it does involve editing a.plist file, so if you're a bit squeamish about going into your OS's insides, this might not be the method for you. Step 1: Navigate to Core Services Navigate to the /System/Library/CoreServices folder.
![Video editing for mac old 2009 macbook os x 10.6.8 Video editing for mac old 2009 macbook os x 10.6.8](/uploads/1/2/5/6/125660436/356159275.jpg)
Step 2: Edit SystemVersion.Plist Using a text editor that lets you edit system-level files, open SystemVersion.plist. Locate the line with the ProductVersion key. Just below it is a string of characters indicating what OS you are running. Your number might look something like 10.5.8, signifying you are running OS X 10.5.8. Change that number to 10.6.8, then save the file. Step 3: Restart Your Mac Lastly, shut down your Mac and restart it. You'll need to boot from a drive running Snow Leopard or later, such as the I mentioned earlier.
I used this method last week and I was able to successfully update a my early 2009 macbook that had been sitting in storage for years from 10.5.8 to 10.8.2 using a DVD image of Mountain Lion purchased from the appstore on an up to date macbook. A couple notes from my experience In order to edit SystemVersion.plist you need to open TextEdit as a root user via the terminal. Copy and paste: 'sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit' without the quotation marks to do this. I had to completely reformat my drive as the Mountain Lion installer would not install over an existing OSX Partition.
I used a Gparted live cd to make a seperate partition to backup my important files. Other than that the tutorial worked like a charm, big thanks to Ryan for posting this!