I am trying to help a friend getting her MacBook Pro updated to the latest possible Mac OSX.
It seems like, after a lot of searching, that I need to upgrade to El Capitan.
Official solution (or what I understood reading Apple website)
buy the DVD of Snow Leopard (10.6) from online Apple Store and install it on 10.5.8;
update the OS until 10.6.8;
use the App Store to download and install El Capitan.
But I am not to happy, buying a DVD which I only need onetime
For some reason I am not able to download El Capitan from the Apps store on my Mojave MacBook.
So any experience with this? I have plenty of Harddisk which I could use for installation off a clean OS and then swap it. I tried this with a Sierra installer, and then exchange the disk, but the MacBook 2008, was not able to boot from this newly installed clean Sierra…
Your system will not allow you to download El Capitan, if it is not capable of running El Capitan (ie: 2016 or newer models)
I’m guessing you want to create a USB installer to use on the 2008 system. You will need to use an older Mac to download 10.11 first, then create that drive. You will have to purchase 10.6 on DVD from Apple before upgrading to 10.11, unless you plan to wipe the HD and install 10.11 fresh. May I also suggest that the 2008 Mac have at least 4gb of RAM installed.
I installed Sierra on a SSD disk, but I am not able to boot from that disk, when I choose it in startup manager, not sure why not.
There is 4 GB of RAM in the machine, and my plans is also to install a new SSD disk, so there are no data that need to be moved, right now, I just want the Macbbok to boot in a never OS X where App store are included.
The most current OS a 2008 Mac can run would be 10.11 / El Capitan as described already. Glad to hear this system has 4gb of RAM as El Capitan will be using just over 1gb of RAM just for boot.You are certainly headed in the right direction.