Check there for software/driver updates as some OS X updates may affect function.) Mac notebooks with optical drives: Noises from the optical drive with recordings of example noises.

(The public release of mac OS 10.13 uses APFS for - Fusion drives are a combination of SSD/Flash and a Hard Disk.) The linked page includes a step-by-step guide to converting an APFS Fusion drive back to "Mac OS Extended (Journaled)" format.

Requires a If a flashing question mark appears after installing 'OS X Yosemite Recovery Update 1.0.'(If you have Filevault Mac Firmware Password enabled.

Some articles have been archived but may still be useful for users of previous OS X versions.) Basics/Apps | Printing | Wi Fi & Blue Tooth | Audio/Video/i Tunes | Internet/Browsers/Mail | Facetime | Air Play | Air Drop mac OS Security | Backups/Time Machine | Home Sharing | Displays/TV | Apple TV | i Cloud | Migrating Files from a Mac/PC Diagnostics | Troubleshooting | Reinstall OS X | Startup Problems | Ports & Adapters | Apple RAID Cards | Fusion Drives If you're unable to resolve or bind to domains that end in .local (archived) (HT3789 Doc on 'How to disable Bonjour service advertising without disabling DNS' removed by Apple due to changes in OS X Yosemite) If the Ethernet connection on your Mac stopped working recently, follow these steps to restore it (article has been removed) It included how to check System Information to find out which version of "Incompatible Kernel Extension Configuration Data" is installed. How to Use Digital Touch on your i Phone, i Pad, and i Pod touch "With i OS 10 and later, you can use Digital Touch to send sketches, taps, or a heartbeat from the Messages app." Using Siri on i Phone, i Pad, i Pod Touch Mac Basics Guide to Using a scanner in OS X with Image Capture and Preview.

(Your specific printer brand's website/support page may also have scanner software that better supports its features.

(See new Apple article - Automatic 4K Apple TV Video output switching of HDR/SDR and refresh rate to match the original video's content.

tv OS 11.2 adds a "Match Content" option in the Video Settings.

), the last compatible i Tunes version for OS X 10.5.x is i Tunes 10.6.3 and for OS X 10.4.x it's i Tunes 9.2.1.) Find and watch movies with 4K, HDR, or Dolby Vision ("You can download a local copy of an HD movie, and you might be able to download HDR and Dolby Vision versions, but you can't download a 4K version.") Apple computers: Black screen or unresponsive Mini Display Port display after sleep (now archived) Includes note to make sure Mini Display Port adapters are Vesa 1.1 compliant. I wish they would list docs like this as archived instead of removing them.) Target Display Mode: Frequently Asked Questions (FAQ) now routes to Use your i Mac as a display with Target Display Mode.

(FYI: If you have a 2012 or later Mac mini with File Vault enabled and the display doesn't wake from (safe) sleep, this apple doc says a workaround is to type in your password (despite having no video), which will log you in and wake the display.) "If your third-party display or projector doesn't work in OS X" (as of March 2016 Apple appears to have removed this article (HT203514). (Includes list of compatible 2009-2014 i Macs - but not Late 2014 27in 5K Retina i Mac) Mac mini (Late 2012): Audio MIDI Setup shows 96(K)Hz output instead of 192(K)Hz (now archived) "The audio controller hardware in Mac mini (Late 2012) supports up to 96KHz audio input and output", correcting a mistake in the original specs that listed 192KHz max.

- Although Apple favors framerate over all else and considers mode switching (24Hz for movies, 60Hz or Interface) a negative due to TV re-sync causing a screen flicker, under "Other Formats" there are 4K options for 24Hz HDR, 24Hz SDR and 24Hz Dolby Vision (if connected to a Dolby Vision compatible TV).

In tv OS 11.2, Apple TV 4K is getting a Native Mode/Frame rate matching option that many owners wanted.

The program is freely downloadable and is also supplied with Mac OS X as well as Apple's i Life home-application suite.