Glenn FleishmanSenior Contributor, Macworld

Glenn Fleishman is the author of dozens of books. His most recent, updated for iOS 14, iPadOS 14, and Big Sur, are Take Control of iOS and iPadOS Privacy and Security, Take Control of Your Apple ID, Second Edition, and Take Control of Wireless Networking and Security. He’s a senior contributor to Macworld, where he writes Mac 911.

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Lost text in a browser form submission? Avoid it with an extension or a clipboard add-on

It’s so easy to navigate away from a page, click submit too early, or suffer from a Web site error—and lose everything you typed.

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If you’re using AFP to share a Mac drive, It’s time to change

You may need to tweak some settings to keep sharing volumes after upgrading to High Sierra or later.

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How to change the icon of a storage device in macOS

To tell different volumes and drives apart, you can paste in custom icons.

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What’s the latest version of macOS you can run on your Mac?

You may be stymied by trying to update with an installer past your machine’s capabilities.

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macOS Big Sur supports Time Machine on APFS-formatted drives, but there are a few catches

The updated macOS finally allows you to use a drive formatted with Apple’s not-very-new APFS filesystem as a Time Machine destination.

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How to unify your Apple IDs in macOS for Media & Purchases

You may have signed in at different times to different apps and want to use just one account.

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How to change your name on your Mac's user account

Apple doesn’t make it obvious, but your full account name in macOS can be changed at will.

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How to check a Mac’s OS upgrade history in System Profiler

You can check to see which updates have correctly installed for macOS.

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How to work around a Save as PDF restriction in macOS Big Sur’s Preview app

A minor changes seems to be perplexing those who are used to exporting pages from a PDF that has some protections on it.

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Tripp Lite AVR900U UPS review: This uninterruptible power supply has the wrong set of features

It’s a quality product in general, but not the right choice for computers or home network gear.


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How to turn on Do Not Disturb in macOS Big Sur

Apple shifted from its former shortcut in macOS to the new Control Center.

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How to upgrade from an older Mac operating system to macOS Catalina or Big Sur

Apple supports macOS migrations back several releases, but you can wind up with too big a gap.

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How to set up a Mac to run either macOS Mojave or macOS Big Sur

If you are running macOS Mojave because you have 32-bit applications you need to use, there are a few options you can use to upgrade to Big Sur.

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AmazonBasics 360-watt Standby UPS review: You’ll find better values in this space

This UPS doesn’t fare well in a head-to-head match-up with similarly priced units from competitors.


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How to fix the 'untrusted_cert_title' error when reinstalling macOS

This problem appears to be one of the past, but readers keep encountering it.