How to Free Up Space on Startup Disk - Solve Startup Disk Full on Mac

Updated to Mac Disk Clean Tips by Amy on June 11, 2022 | Approved by Christian Cawley

There must be a message pops up from your Mac as "your startup disk is almost full" which results in you searching on the internet for "startup disk full Mac", right? While a search on the internet, you can see many people are asking the same questions and explain the bad results of startup disk full on Mac:

Since the startup disk full will cause so many problems, you must want to ask "how do I free up space on startup disk on Mac", right? Let’s learn how to do it.

Quick Navigation
Part 1. Best Way to Free up Space on Startup Disk Swiftly
Part 2. How to Fix Startup Disk Full Manually (Taken Time and Energy)

Part 1. Best Way to Free up Space on Startup Disk Swiftly

Before we get started, you must think about how you manage your phones and computer effectively or work more effectively. That’s using the software, right? There are many kinds of software tools developed to make our life simpler and easier. It is the same with how to free up space on the Startup disk. You can search for and download such software over the internet, making full use of it to fix the problems of your Mac.

To fix the problem of startup disk full on Mac, I recommend you try iBeesoft iCleaner. It is specially designed to help users to analyze their Mac, showing them how space is taken and what’s the size for each file types, making it easier for users to know to clean up Mac and solve the problems caused by Startup disk full on Mac. Here are some of its main features:

Your Safe & Effective Solve Startup Disk Full Mac Tool

(Trust Score 4.7 by 157 Users)
  • Less than 1 minute to analyze your Mac, showing you junk files and clutters as well as the file size.
  • Supports removing almost all the junk files, including system junk, app junk, user junk, mail attachments(usually big ones), useless downloads, trash files, and other types of junk files.
  • Fully compatible with macOS, even the latest version. Standalone, safe and easy to use, boost your Mac performs.
Free Download

Here are the simple steps for how to make full use of iBeesoft iCleaner to solve the problem of the Mac startup disk is full. Click the Download button to get the latest version of the software. It is virus-free and safe, install it like you install other applications. Please note that it is not available at App Store yet, please set up your Mac system preferences as “install apps from trusted sources and App Store”. It’s fully compatible with all Macs, feel free to use it.

  1. Analyze Mac Startup Disk Space
  2. Launch the software and from the main window, please click the "Start Analyze" button at the lower bottom of the window. After then, you can see the software begins to work. Within a few minutes, it will show the total junk files it found and the size for each jun file.

  3. Select Junk Files to Free up Startup Disk
  4. Next, select the file type(s) to clean by clicking it on the right side. After then, you can see the details for each type of junk files. Select unwanted ones to remove from your Mac.

Generally speaking, you can find files are useless in the Download folder and files are very big for mail attachment. Clean up these 2 first.

Part 2. How to Fix Startup Disk Full Manually (Taken Time and Energy)

If you know your Mac well, then you must know which types of files take too much space. After then, you can manually remove them from your Mac to free up space for the startup disk. Here is the list that might be helpful for you to manually fix the problem of startup disk is full:

  1. Find which types of files take too much space on your Mac. You can see it by clicking the Apple icon on the very top left of the main window > select "About This Mac" > "Storage".
  2. After step 1, you can make a cleanup Mac plan. To be honest, for most people, you can try the following cleanup tips:

Step 1 and Step 2 only ensure you which types of files needed to be removed. As for logs, browsing history, cooks, cache, and more, I still recommend you try iBeesoft iCleaner. People manually really need more time looking for them, analyze them and remove them.