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Step 1: Exit and Restart the Application
Applications like Safari, Chrome, Firefox, Photoshop, Spotify, and many others create temporary cache files as they are used. If you don't exit these applications for an extended period, temporary cache files will continue to accumulate and usually won't be deleted until the application stops running.
You can manually delete cache files, but for convenience, simply restart the application, and the operating system will take care of removing these files for you. It's a great idea to restart applications regularly, especially web browsers.
Step 2: Manage the Downloads Folder
If left unchecked for a while, the Downloads folder will visibly 'balloon,' consuming your hard drive space. Navigate to the ~/Downloads folder and organize files by size, then delete anything (or everything) you no longer need to free up space.
Create a habit of efficiently managing your downloads folder in the future: after installing any application, delete the .DMG installer file, Zip file, or any accompanying files.
Step 3: Restart Mac and Install System Updates
Restarting your Mac helps clear system cache, app-specific cache, system update installations, and more, including virtual RAM, swap files, and sleepimage files. This will help free up Mac hard drive space.
Essentially, Swap files are inactive memory files stored on the hard drive, and sleepimage files are copies of what's in memory used when Mac boots from Sleep mode. Both these files get cleared when you restart your Mac. In the example below, these two temporary files occupy 21GB of hard drive space, and the Mac hasn't been restarted in about 5 months.
The advice is to restart your Mac regularly, ideally once a month, or install OS X updates periodically. If you've downloaded updates but haven't installed them, these updates also consume a significant amount of Mac hard drive space. Restarting the system will help reclaim storage and allow for the installation of updates.
Step 4: Use OmniDiskSweeper to Free Up Disk Space
OmniDiskSweeper is an excellent free utility. Use this tool to scan your hard drive and list all folders by size, helping you quickly identify which apps consume the most space and their locations.
Use this information to identify the biggest space hog, like the downloads folder. In general, this application is quite user-friendly, ensuring you never accidentally delete a file without knowing its purpose and that you never delete any system files or create clutter on your Mac.
Download OmniDiskSweeper and install it here: Download OmniDiskSweeper for Mac
OmniDiskSweeper is an excellent solution to reclaim hard drive space, and you won't have to worry about 'disk full' warnings anymore.
Step 5: Empty the Trash
Sounds amusing, but it's often overlooked. Despite being a simple step, many users forget to empty the trash. The trash bin gradually fills up, and sometimes the full hard drive is due to a slew of tools being sent to the trash, but the trash itself remains uncleared. If you've never done this before, right-click on the trash bin and select Empty Trash.
Additional:
Tip 1: Check the Application Support Folder
The Application Support folder is worth checking, especially if you've installed Steam and play games. Steam stores a significant number of files in ~/Library/Application Support/Steam/, and if you install many Steam games, these files can accumulate rapidly.
After quitting gaming, consider tidying up that folder. If you're using a Mac with a small hard drive capacity, you can move the Steam folder to another drive for cleanup, freeing up Mac hard drive space.
Tip 2: Activate Finder Status Bar
Enabling the Finder status bar allows you to monitor available hard drive space, so you won't be surprised by error messages in the future. Activating the Finder status bar is quite straightforward:
From Finder in OS X, select the View menu => Show Status Bar.
Anytime your hard drive reaches about 5-10% capacity, it's time for a disk cleanup. Mac (and all computers in general) perform best when there's enough free space for cache and swap disk files, so regular system cleanup is crucial to free up available space.
Tip 3: Remove Unused Applications
Another excellent solution to reclaim Mac hard drive space is uninstalling applications you no longer use. This process is quite simple; access the /Applications/ folder and uninstall applications you no longer need, or you can delete App Store apps on Launchpad, similar to what you do on iOS.
For a more comprehensive approach to completely uninstalling apps and anything related to them, free third-party tools like AppCleaner are what you're looking for.
Here are 5 steps to increase Mac OS X hard drive space. If you have additional tips or solutions to boost Mac hard drive capacity, feel free to share your thoughts in the comments below.
