GUI software and the commands you need to get the signature of an app checked thoroughly by macOS, plus a detailed list of error code.
error
If you try compacting a sparse bundle, Spundle and hdiutil could return error 1. This explains why, and fixes Spundle to get over it.
Many Mac users now have a better idea as to whether anything’s amiss at home than in their Mac. Why we need a way to check a Mac’s status.
If your SSD suddenly loses power, what is there to prevent it from incurring serious errors as a result? Practical solutions.
Handling errors means more than a couple of jargon phrases and a magic number. Designing for error requires the user to be at its centre.
What to do when your browser complains that a website you want to visit has a problem with its certificate security.
Did you think it was only old Mac OS X affected by the Let’s Encrypt certificate expiry problem? No, it’s Safari wherever you can use it. Here’s how to deal with it.
Finder refuses to eject a volume because it’s in use, or Disk Utility complains that it can’t unmount a volume. Here’s what to do about it.
When you write a comment to an article here, or edit a Property List, you’re editing XML. Two or three characters won’t work properly.
With a new version of Xcode, I knew that my network backup would take several hours. Then, as it neared its conclusion, disaster struck: the router reset itself and the network share vanished.
The Eclectic Light Company 