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David Shayer

David Shayer

David Shayer was an Apple software engineer for 18 years. He worked on the iPod, the Apple Watch, and Apple's bug-tracking system Radar, among other projects.

David Shayer 53 comments

Six Reasons Why iOS 13 and Catalina Are So Buggy

By most accounts, the release of iOS 13 and macOS 10.15 Catalina have been troubled, with numerous significant bugs making it past Apple’s internal testing and the public beta phase. Former Apple engineer David Shayer explains the underlying reasons these releases have had so many problems.

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Tech Tool Pro 4 Joins Our Disk Repair Comparison

A few months ago in TidBITS I compared the various disk repair programs then available for Mac OS X: Norton Utilities 8.0 ($100), DiskWarrior 3.0 ($80), Drive 10 1.1.4 ($70), Disk Guardian 2.2 ($70), and Apple's Disk Utility (free)

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Shootout at the Disk Repair Corral

Some things are inevitable. Death, taxes, and disk crashes. One day you will try to open an important file, only to receive a dire error message. Or perhaps you'll discover that an entire folder has vanished

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Optimizing Disks Is a Waste of Time

Optimizing disks is a waste of time. There, I said it. The horse is out of the bag, the cat is out of the barn. So why do so many people believe that an optimizer is an essential part of any Mac user's tool kit? And what does it mean to optimize a disk, anyway? Background Fragments -- When you save a file to disk, the file system looks for an empty space to write the data