After a recent hardware failure I was forced to replace my iMac’s internal hard disk (more on this some other time, perhaps). One of the decisions I made was to move down from a 1TB HDD to a 512GB SSD, so rather than restore from a backup I reinstalled all my applications from scratch and moved my large Lightroom and iTunes libraries to an external HDD.
One of the side effects of reinstalling two or three dozen applications is that Launchpad’s progress bar got a bit confused. By the end of the afternoon it was stuck on 0% progress and looked like the image to the right:
Mildly irritating, but not the end of the world. I’ve lived with this for a couple of weeks now, expecting it to fix itself when I installed a new application. It was only today that I noticed that it was still broken and decided to do something about it.
Some Google research turned up this Terminal command:
defaults write com.apple.dock ResetLaunchPad -bool true; killall Dock
This solved the problem nicely.