MAC TUTORIALS / MACOS

Instructions on how to deauthorize iTunes on a computer you no longer have access to.

Instructions on how to enable the root user and change the root user's password in macOS.

Instructions on how to make a bootable macOS High Sierra USB key.

Instructions on how to check the number of computers you've authorized in iTunes.

Instructions on how to disable System Integrity Protection (SIP) on your Mac.

Instructions on how to install macOS on a new hard drive without a USB install key or install CD.

Instructions on how to set the default application to open a file type in mac OS.

Instructions on how to backup your entire Mac hard drive to a disk image.

Instructions on how to create an email signature and add your logo to an email in OS X Mail.

Instructions on how to stop the Photos app in OS X from automatically opening each time you connect an iPhone or other device.

Instructions on how to float the QuickTime video player so that it is always on top of other applications.

Instructions on how to get the new Apple TV screen savers on your Mac.

Instructions on how to make a bootable OS X El Capitan USB key.

Whether you downloaded Xcode from Apple or received it from another source, you can easily verify the integrity of your copy of Xcode.

These are instructions on how to fix an issue where your Mac does not receive iMessages sent to your phone number.

Instructions on how to set a startup sound for Mac OS X.

Instructions on how to add startup items in Mac OS X.

Instructions on how to enable support for the 5K HP Z27q display in OS X Yosemite 10.10.3 or higher.

Instructions on how to display additional screen resolution options when setting the resolution of your monitor in Mac OS X Yosemite.

Instructions on how to stop iPhone calls from ringing on your Mac.

Instructions on how to disable and re-enable Spotlight indexing on Mac OS X Yosemite, Mavericks, Mountain Lion, and Lion.

Instructions on how to encrypt a hard drive using Mac OS X Yosemite or OS X Mavericks.

Instructions on how to sign a PDF using the annotation feature in OS X Preview.

Instructions on how to enable AirDrop on older unsupported Macs.

Instructions on how to access the somewhat hidden Mac paint features in OS X Yosemite.

Instructions on how to enable Dark Mode in Mac OS X 10.10 Yosemite.

Instructions on how to make a bootable OS X Yosemite USB key.

Instructions on how to enable text selection in Quick Look.

Instructions on how to enable Single Application Mode in Mac OS X.

Instructions on how to disable curly quotes or 'smart quotes' in Mac OS X.

Instructions on how to update the operating system of your Mac to the latest version of OS X.

Instructions on how to disable your Mac's remote control infrared receiver.

Instructions on how to setup and use iCloud Keychain on OS X Mavericks.

Instructions on how to create a bootable OS X Mavericks USB key.

Instructions on how to find the MAC address of your ethernet or wireless networking card in Mac OS X.

Instructions on how to run applications that 'can't be opened because it is from an unidentified developer' in Mac OS X Mountain Lion.

Instructions on how to enable and use Dictation in Mac OS X Mountain Lion.

Instructions on how to use the built-in password generator in OS X.

Instructions on how to restore 'Save As' functionality to OS X Mountain Lion.

Instructions on how to install OS X Mountain Lion 10.8 from the Mac App Store.

Instructions on how to create a bootable OS X Mountain Lion USB key.

Instructions on how to set your Retina Display MacBook Pro to its full 2880x1800 resolution.

Instructions on how to change the default save location of OS X screenshots to a folder of your choice.

Instructions on how to encrypt an external hard drive in Mac OS X Lion using the built-in FileVault 2.

Instructions on how to find the location of Mac OS X applications by Bundle ID.

Instructions on how to convert H.264 MKV files to MP4 without re-encoding using MP4Tools for Mac.

Instructions on how to convert H.264 MKV files to MP4 without re-encoding.

Instructions on how to eject a CD from your Mac using a PC keyboard or USB mouse.