![]() ![]() If you have more than one user account, make sure you're logged in as an administrator. The administrator account is the one that was created automatically when you first set up the computer. Launch the built-in Terminal application in any of the following ways: Sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper Triple-click anywhere in the line of text below on this page to select it, then copy the selected text to the Clipboard by pressing the key combination command-C: Install the app you downloaded in the Applications folder as usual. Select it in the results (it should be at the top.) ☞ Enter the first few letters of its name into a Spotlight search. ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens. Click Utilities, then Terminal in the icon grid. Paste into the Terminal window by pressing command-V. You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning to be careful. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator. Ignore any other messages that appear in the Terminal window. The application window will open, eventually showing all files in all folders, sorted by size. It may take a few minutes for the app to finish scanning. I don't recommend that you make a habit of doing this. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance. When you're done with the app, quit it and also quit Terminal. Even if you pay extra for a bigger drive when you buy your Mac (don't under estimate storage requirements), you could still run out of space. If the Mac's drive is nearly full, what can you do? Obviously, you need to delete files to free up space, but which ones? Being able to see which files and folders use the most space is essential and it is pointless deleting small files that use little space. Here we look at a couple of ways to see what is using the most disk space. They enable you to instantly see which folders and files are using the most storage space and knowing this, you can then do something about it, such as deleting big files or moving them to external storage like a USB disk drive.įirst we will look at features built into macOS and then use a free utility called OmniDiskSweeper. ![]() Go to the Apple Menu and select About This Mac. Select the Storage tab and all the drives, internal and external, are listed. You can easily see how much free space is on each drive and by letting the mouse hover over a coloured section of the space usage bar, you can see what is using the space. It depends on your MacBook, but it can take a minute or two to produce the results. It does not provide any details, so you don't know exactly what is using the space. It is too general to enable you to take any action to free up space. ![]()
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