Locating space wasters

The most efficient way to free up disk space is to delete some large files and folders you no longer need.

Look at the disk map and try to locate unusually large folders. Then drill down and find out what actually takes so much disk space.

After you locate a candidate for deletion, ensure you no longer need it, and then actually delete it.

iTunes and media files

iTunes library often take tens or hundreds of gigabytes on users’ disks. Here’re a few suggestions on cleaning it:

  • Check for duplicates. Removing a single film’s copy can save you up to 5 gigabytes.
  • Remove old backups of your iOS devices. These are normally located within ~/Library/Application Support/MobileSync/Backup.
  • Delete old purchased content. You don’t have to keep a local copy of every movie, song or app you’ve purchased on iTunes as they can be redownloaded anytime (unless it’s taken down from the store).
  • Remove some large movies, apps or podcasts. While DaisyDisk can be a great tool for finding the largest ones, use iTunes’ UI to delete any content from its library to avoid broken links.

Check movie (~/Movies) or music (~/Music) folders for large films, podcasts or music collections you may not need anymore.

Downloads

Download (~/Downloads) folders are often filled with lots of large useless files. It’s usually a good idea to move everything valuable out of this folder and just empty it from time to time. If you use any file sharing clients, check if you really need to keep all the stuff you download from the net.

Games

Modern games successfully compete with HD movies for taking most of the disk space. Mac App Store or Steam gamers are lucky: they can delete their games and download them later.

Mac App Store games are normally located in your Applications (/Applications) folder and Steam game folder can be found in ~/Library/Application Support/Steam. Just don’t delete Steam games from DaisyDisk, use Steam’s own UI instead.

Application libraries and leftovers

Some applications leave huge cache files or libraries in ~/Library/Application Support, but be careful when deleting anything from this folder and know what you’re doing. If you need to remove certain application with all of its settings and data, use special tools like AppDelete.