My current OS is 10.7 lion, instead of upgrading to Yosemite, I wanna upgrade to Mavericks 10.9.5, how can I do that now?
MacBook Pro, Mac OS X (10.7.5)
You can't unless you previously downloaded Mavericks from the App Store. It was removed when Yosemite was released.
You may want to consider getting Mountain Lion.
Before getting any newer operating system backup your data and check http://www.roaringapps.com/ for compatibility of your software.
Yes, I copied the Mavericks. dmg from IT person on my campus, and now my mac is upgraded. Thanks!
In all likelihood, your Mac is not running a version of OS X that is tied to that IT person's AppleID and you will not be able to update it in the future without his password.
How can I upgrade to Mavericks currently?
