Hi guys,
I have the same problem like you.I have a mid2009 macbook pro with 10.6.8(Snow Leopard) and want to install Mavericks NOT Yosemite.
So my question is, did someone managed to install Mavericks on his computer, which is not delivered with Mavericks.
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Sure, you can install Mavericks if your MBPro originally shipped with Mavericks, using Internet Recovery. Unfortunately, your MBPro is too old for Internet Recovery.
So, that leaves you with the other choice, install from a downloaded Mavericks installer.
You can get that if it is in your App Store as a Purchase, meaning that you have purchased Mavericks when it was available. Of course, it was always a free download, so "purchased" is just that you had already downloaded Mavericks while it was available.
You can use a download that someone else downloaded - but that use would be technically outside of the license for proper use.
You can get a copy of Mavericks at an Apple store. Just ask. There may be some nominal fee for copying the download for you (I don't know for sure).
Or, you could call AppleCare/Appstore support, explain your request, and you should be able to get a download redemption code that you use at the App Store, and you will be able to download the Mavericks installer. As you know, it is not available directly from the App Store, but you can still download it if you have it in your Purchases. (I am sure about that, because I just downloaded Mavericks a few days ago, from the App Store - but Mavericks is in my Purchases list.
When you have the Mavericks installer, I recommend that you make a bootable USB drive, using one of various methods. You can use that if you need to install again, without waiting for the 5GB download....