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I have an iMac 2007 which I want to upgrade to latest OS possible to use on this machines. What OS can I use.
Imac 7.1
Build 9L31a
Version 10.5.8
iMac, Mac OS X (10.5.8), late 2007
Before doing any upgrading BACKUP!!!
You can upgrade to Yosemite 10.10.3. In order to do so, ensure the computer has 4GB or greater RAM. A late 2007 iMac may accommodate 6GB. If you upgrade the RAM, buy it from either Crucial or OWC (www.macsales.com). iMacs are sensitive to RAM so it is important to use high quality RAM.
Once the RAM is in good shape, purchase Snow Leopard from Apple's online store for $20. Next download and install 10.6.8 Update Combo v1.1 and then navigate to the Mac App Store and download and install 10.10.3.
NOTE: Chances are you may have legacy applications installed that are PPC based. In order to continue using these apps they must either be upgraded or replaced. You will need to inventory your apps to see if they are PPC, Intel, or Universal.
Crucial does not recognize that your iMac can handle up to 6GB RAM:
http://www.crucial.com/usa/en/compatible-upgrade-for/Apple/imac-%28mid-2007%29
From that page:
They are stuck on Apple's outdated RAM specs published eight years ago.
OWC is your best source for the special 4GB module that gets you to 6GB RAM.
I have an iMac 2007 which I want to upgrade to latest OS possible to use on this machines. What OS can I use.
