Am I able to run OS X 10.11 on my Mac or not?
60029
Which macs are compatible with OS X 10.11 El Capitan?
155514
Is my system able to run 64-bit OS?
112347
How much of 32-bit support is dropped in macOS Catalina?
141372
OS X El Capitan and older not available on App Store?
69123
Install Windows 7 On MacBook (x) 2015
38925
Can you update to macOS 10.14 (Mojave) without converting to APFS?
119174
MAC OS for Intel based PCs
104017
Upgrading from OS X 10.10 Yosemite Developer Preview
93727
Why can't I find OS X Yosemite in the Mac App store?
136928
How to get Ubuntu download for a Mac?
36892
Upgrading from Yosemite to El Capitan, but not Sierra
87906
Why does OS X want me to "upgrade" from El Capitan to Yosemite Beta 4?
104215
Maven Install on Mac OS X
128793
Can I have multiple Xcode versions installed?
91274
How critical are macOS Mojave compatibility requirements?
72015
How to check whether my Intel-based Mac is 32-bit or 64-bit
81559
How to install Ubuntu on a Mac and keep OSX?