How do I install macOS Siri from Sierra to El Captain on my MBP Mid-2012?
99470
Running Siri on OS X El Capitan
12170
How do I make a bootable USB OS X installer on a Mac?
134137
How do I use Messages with Google Hangouts on MacOS Mojave?
65203
El Captain update download doesn't continue after restarting the Mac
50527
OS X El Capitan installation error: AMD-Action:authenticate:SP
104511
Where are the audio files of "Voice Memos" stored on macOS Mojave?
4309
How can I download an older version of OS X/macOS?
114664
Old version (macOS Sierra) for Pages, Keynote and Numbers, iWork
153438
OSMasterMap.ttf not recognised in QGIS - macOS Sierra
95709
Why are my Macbook's internal speakers not available?
143956
I can't download El Capitan from App Store
86088
What version do I download for my Mac?
43279
Alternative Method to Acquire El Capitan Upgrade
11780
How can I download the macOS Big Sur installer on a Mac which is already running Big Sur?
46084
Can I downgrade from macOS Sierra to Snow Leopard (OS X 10.6)?
158847
Upgrading MacBook air from 10.6.8 to Sierra
17437
Does Apple provide an API for SIRI?