On my MacBook Pro, the Storage section on about my Mac shows that I have 730.21GB free out of 999.7GB, but it also says that my apps take up 545.33GB.
Why is this happening? How much storage do I actually have available?
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This seems to be quite a common problem. To fix it, you need to tell Spotlight to re-index your hard drive.
There are two ways to do this, depending on how comfortable you are with the command line.
sudo mdutil -i on /, then tell it to re-index Macintosh HD with
sudo mdutil -E /.
Re-indexing may take a while but once it is complete the figures should match.
A handful of sources that talk about this solution:
https://www.macissues.com/2014/05/27/fix-about-this-mac-not-showing-proper-disk-space/ https://www.cnet.com/news/what-to-do-when-about-this-mac-lies-to-you/ https://www.maketecheasier.com/fix-wrong-hard-drive-data-usage-calculation-osx/ http://www.macworld.com/article/2997252/storage/the-case-of-the-missing-el-capitan-hard-disk-space.html