Mac OS

Mac OS, Mac OS X, or macOS, is the operating system that resides on Apple’s desktop and portable computer lineup. Built upon a Unix core, it is easy to use yet highly advanced, extremely stable, and an excellent OS for productivity and creation. Browse through our articles or use the search feature to look for something specific that is pertinent to the Mac operating system.

Search Mac OS

How to Secure Erase Disks on MacOS Tahoe & Sequoia

May 4, 2026 - Leave a Comment
Secure Erase a disk on MacOS Tahoe and Sequoia when Disk Utility does not show Security Options

Whether you’re preparing to sell, recycle, or repurpose a Mac, or you’re going through old hard drives and storage disks that you wish to clear all data from, securely erasing the drive is an important step. Simply deleting files or formatting a disk isn’t always enough, especially for hard drives and external storage, since data … Read More

Calendar Inbox on iPhone & Mac Adds Detected Events from Messages and Mail

May 1, 2026 - Leave a Comment
Calendar app

The Calendar app on iPhone, iPad, and Mac offers a handy automatic event detection feature, able to find details like dates, times, and locations, through the Messages app and even Mail app, of presumed events and appointments. The auto detection system is part of Siri, and recognizes dates as potential events, placing them in a … Read More

How to Find Compromised & Reused Passwords on iPhone, iPad, and Mac

Apr 30, 2026 - Leave a Comment
Passwords app

The Passwords app, Apple’s built-in password manager for Mac, iPhone, and iPad, not only stores your logins and passwords for easy authentication, but it can also alert you to security risks. Passwords app makes it easy to quickly find compromised, reused, or weak passwords, and take action to secure your accounts. If you’re a Passwords … Read More

How to Clean Install MacOS Tahoe

Apr 29, 2026 - 1 Comment
How to clean install MacOS Tahoe

Performing a clean install of macOS Tahoe can be a necessary task in some situations, offering a way to start fresh on a Mac. Since a clean install removes everything and reinstalls MacOS from scratch, you are presented with basically a brand new Mac from a software standpoint. Clean installations can be useful for users … Read More

How to Tell if a Mac Needs More RAM Using Memory Pressure

Apr 27, 2026 - 1 Comment
How to check Memory Pressure to determine if a Mac needs more RAM

MacOS includes a built-in way to assess memory usage, called Memory Pressure, and it can give you a lot of insight into your Macs performance, and whether or not you need more RAM. This is particularly informative if you feel like your Mac is slow, apps and media are stuttering, or you’re experiencing the annoying … Read More

Why WindowServer Uses High CPU & Memory on MacOS Tahoe and How to Fix It

Apr 22, 2026 - Leave a Comment
How to address and resolve WindowServer high CPU and memory usage on Mac

If you have felt your Mac is curiously sluggish, you may have opened Activity Monitor to investigate at some point and noticed a process called “WindowServer” using a large amount of CPU or memory. High CPU usage and memory consumption of WindowServer has been a long reported issue on MacOS with various system software versions, … Read More

How to Highlight the Active Foreground Window on Mac with HazeOver (MacOS Tahoe Fix)

Apr 13, 2026 - 1 Comment
Make foreground windows easy to identify on MacOS with HazeOver

One common complaint of MacOS Tahoe users is that it can be difficult to determine which window is active or in the background. With all of the flatter and low contrast design elements in Tahoe, there is a significant reduction in contrast between background and foreground apps and windows, which can make visual focus less … Read More

StillColor for Mac Disables Temporal Dithering to Reduce Eye Strain and Flicker

Apr 10, 2026 - 4 Comments
Stillcolor disables temporal dithering on Mac which can improve accessibility for some users

Some Mac users who are sensitive to eye strain and PWM display flickering have turned to a small free utility called StillColor to modify how MacOS renders colors on their screen. The StillColor tool has a feature that can disable something called “temporal dithering”, a usually imperceptible display technique that alternates pixel colors at the … Read More

MacOS Tahoe 26.4.1 Update Released with Bug Fixes

Apr 9, 2026 - 3 Comments
MacOS Tahoe 26.4.1 update

Apple has released MacOS Tahoe 26.4.1 as a software update for Mac users running the Tahoe operating system. The update includes unspecified bug fixes, making it recommended for all Tahoe users to install. The MacOS Tahoe 26.4.1 update is particularly important for users of the new M5 MacBook Air and M5 MacBook Pro series to … Read More

How to Downgrade from MacOS Tahoe to MacOS Sequoia

Mar 30, 2026 - 3 Comments
How to downgrade from MacOS Tahoe to MacOS Sequoia

macOS Tahoe 26 has been a controversial release of MacOS system software, mostly due to it’s completely redesigned interface built around what Apple calls Liquid Glass, which has a new look, but includes some major usability and legibility issues. Tahoe is also just buggier and less refined than other Mac operating systems like Sequoia. Accordingly, … Read More

PSA: Automatic Software Update Enables Itself with MacOS Tahoe 26.4 & iOS 26.4

Mar 25, 2026 - 8 Comments
MacOS Tahoe 26.4 enables automatic software updates and downloads again

If you’re the type of Mac, iPhone, or iPad user who likes to update their operating systems manually, you will want to pay attention to your devices after you have installed the latest iOS 26.4, iPadOS 26.4, and MacOS Tahoe 26.4 software updates, because installing those updates will enable automatic updates for system software. If … Read More

MacOS Sequoia 15.7.5 & MacOS Sonoma 14.8.5 Released

Mar 25, 2026 - Leave a Comment
MacOS Sequoia software update

Apple has released MacOS Sequoia 15.7.5 and MacOS Sonoma 14.8.5 as software updates for Mac users running the Sequoia or Sonoma operating systems. These updates focus entirely on security patches, and do not include new features or changes. Mac users who are running Tahoe can grab the macOS Tahoe 26.4 update instead. Separately, Apple released … Read More

MacOS Tahoe 26.4 Update Released with New Emoji, Bug Fixes, Security Patches

Mar 24, 2026 - 8 Comments
macOS Tahoe 26.4 update

MacOS Tahoe 26.4 has been released as a software update for all Mac users running the Tahoe operating system. The update includes a few mission critical new Emoji icons like the cryptid Bigfoot, and some unspecified bug fixes, along with security updates, and is therefore recommended for all macOS Tahoe users to install. There are … Read More

Security Improvement Update for macOS Tahoe 26.3.1(a) & iOS 26.3.1(a) Released

Mar 17, 2026 - 1 Comment
Security Improvement

Apple has released what they are calling a “Security Improvement” as a software update for macOS Tahoe 26.3.1, iOS 26.3.1, and iPadOS 26.3.1. The update, err, improvement, is being labeled as macOS Tahoe 26.3.1 (a), macOS 26.3.2 (a), iOS 26.3.1 (a), and iPadOS 26.3.1 (a), and though it installs just like a software update, you … Read More

How to Set the Primary Display on macOS Tahoe, Sequoia, or Sonoma

Mar 17, 2026 - Leave a Comment
Set the Primary Display in macOS Tahoe, Sequoia, and Sonoma

Using multiple displays with a Mac is a very common setup, whether that’s using a larger external monitor with a laptop, or running a multi-display desktop setup. It’s well known that large screens and external displays can really boost some peoples productivity, and one way to further improve your multi-screen Mac setup is by choosing … Read More

How to Clean Install MacOS Sequoia

Mar 16, 2026 - Leave a Comment
How to clean install macOS Sequoia

A clean install of macOS Sequoia installs the operating system onto a freshly erased Mac, removing all existing data, settings, and even the previous MacOS versions from the Mac. This approach is sometimes preferred by advanced users who want a completely fresh start, are troubleshooting persistent system issues, or simply want to run MacOS Sequoia … Read More

Fix Bluetooth Mouse or Keyboard Disconnecting in MacOS Tahoe

Mar 12, 2026 - 6 Comments
macOS Tahoe Bluetooth disconnecting at random

Some Mac users have noticed an annoying issue with recent MacOS updates (including both MacOS Tahoe and Sequoia) where Bluetooth accessories like a mouse or keyboard randomly disconnect, briefly stop responding, or disconnect for 10-30 seconds and then reconnect leading to lengthy lags in using the cursor or keyboard. Some users even report that some … Read More

How to Make a MacOS Sequoia USB Boot Installer Drive

Mar 10, 2026 - 4 Comments
How to make a MacOS Sequoia bootable install drive

If you’re a Mac user planning on performing a clean install MacOS Sequoia, or you’d like to have a MacOS Sequoia boot drive for troubleshooting reasons, then you’ll find that creating a bootable installer drive for macOS Sequoia is useful to have on hand. Making bootable install disks is a little technical in that it … Read More

Subscribe to OSXDaily

Subscribe to RSS Subscribe to Twitter Feed Follow on Facebook Subscribe to eMail Updates

Tips & Tricks

News

iPhone / iPad

Mac

Troubleshooting

Shop on Amazon to help support this site