Fix Mac Startup Disk is Full on MacBook Pro, Air Mac (Sonoma)

🗓️ September 26, 2023 By ✍️ Jaysukh patel

Probably this is the only problem which has got a lot more flexible solutions to fix it. Every Mac user has faced Mac startup disk a full message at least once while using Mac or MacBook Pro or Air. Don’t worry it isn’t a big deal; we can quickly fix you have to go through this guide and get rid of Mac startup disk is a full error in Mac.

However, if you avoid “Your startup disk is almost full” message from the Mac you will again going to receive it. So it is better to resolve this permanently. Read on to fix to make more space available on your startup disk, and delete some files.

You might get the following Symptoms:

  • Mac Startup Disk is full won’t boot or won’t start or can’t delete files because the disk is full mac
  • Mac startup disk is full with a white screen
  • Sometimes your Mac says startup disk is full but it’s not overloaded
  • the operation can’t be completed because the disk is full.

These all types of issues can be resolved through my given free troubleshooting. Hope this may help you to get success.

How to Fix Mac Startup Disk is Full-on MacBook Pro/ MacBook Air/ iMac 

Fix 1: Get an overview of Storage

First off, we will check out what are those files eating up the storage of your Mac. Analyzing the used storage and remaining storage helps us to take action against what to delete and what not to and get rid of Mac startup disk is full. To do so,

On MacOS Monterey & Earlier

  • Step #1: Click on the “Apple” icon and then select “About This Mac.”
  • Step #2: There you will see the “Storage” tab, click on it.
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On MacOS Ventura & Later

Step #1. Go to the Apple Logo from the top menu > System settings.

system-settings-on-macos-ventura-on-mac

Step #2. Next, Click on General > Storage.

storage-settings-on-mac-in-macos-ventura

Step #3. Manage storage from the recommended option.

Precisely take a look at categories like Photos, Others, Apps, Movies, Audio, and Backups.

Fix 2: Track Down large files and Remove it

The first fix will only give you a review of how much space is occupied by which category. In this troubleshooting, we will directly look search the big files eating up area. From there if you don’t need that large-size files, you can immediately delete them and free up some space.

  • Step #1: Launch “Finder.”
  • Step #2: Now, open any folder and bring up a finder search by pressing Command+F.
  • Step #3: From there, you have to select “This Mac” and then go for “File Size.”
  • Step #4: Also select “is greater than” option along with choosing the size like 1GB or 2GB or 500GB.

If you find any garbage file or a file that is no longer useful, then you can delete it right from that window by dragging it to Trash or pressing Command+Delete.

Fix 3: Clear the Downloads folder

Mostly, we have a habit of downloading files, and often, after using it, we don’t delete it from Mac, and so it occupies one crucial part of our storage. Get rid of archives files and zip files and images and videos, which are not necessary for you. Go and look at your Download folder and delete the files.

Fix 4: Empty Trash on Your Mac

I permanently delete the unnecessary when I receive any message, like your Mac storage is complete, or your Mac startup disk is entire. Deleting those files isn’t enough if you want to make some space on your device. When you delete any data from the Mac, it gets stored in the Trash folder of your PC. So you must also clear the Trash and then only you will get some free storage, or we can say more space.

Fix 5: Clean Cache files on Mac

Cache files are the ones that help your Mac to run smoothly, without cache files, it might be challenging to run applications. On the other hand, it consumes a lot of storage.

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However, if you periodically delete these files, then it will make some space-free. Are you thinking about what after deleting these cache files? Will your Mac function properly? Of course, when you restart Mac, the new cache files will be created in the Mac.

  • Step #1: Open “Finder” and click on the “Go” menu.
  • Step #2: Then click on “Go to folder.”
  • Step #3: Enter the following path,

~/Library/Caches

  • Step #4: Delete the cache files that are taking more space.
  • Step #5: Go back to “Go to folder” and again enter the following path,

/Library/Caches

  • Step #6: Similarly, delete the files which are eating most of the space.

Fix 6: Remove old Backups on Mac Finder or iTunes [2 Ways]

macOS Catalina or Later macOS Users can Use Finder to Manage Backup Files without Terminal command. But MacOS Mojave and Earlier macOS on Mac and Windows PC users can use iTunes instead of Finder. First is to use iTunes or Finder, Connect your iPhone/iPad to Your Mac or PC, According to MacOS Version use iTunes/Finder on Mac/PC. Once you connect the iOS/iPadOS device, Check the Device on iTunes/Finder window. and click on a device name from Sidebar of the Finder and for the iTunes window available at the top.

Manage iPhone and iPad Backup on Mac
Manage iPhone and iPad Backup on Mac

Under the Backup section, Click on Manage Backups… and See a list of all previous backup. to Delete it, Select the Backup name and Tap on the Delete button to remove data from Mac.

2nd Way to Find Backup Folders and Delete it

If you regularly take backups of iOS devices and also of Mac then remove the old files and only keep the recent backup file, in case if you need later. This will helps to clear up to 100+ GBs Space at once.

To remove iTunes backup,

  • Step #1: Launch “Finder
  • Step #2: Click on the “Go” menu.
  • Step #3: From the drop-down menu select “Go to folder.”
  • Step #4: Type the path,

~/Music/iTunes/Previous iTunes Libraries

Remove or Delete iTunes Library Backup on Mac
Remove or Delete iTunes Library Backup on Mac
  • Step #5: You will see the backups with dates. Delete the old ones.

To remove All iOS/iPadOS Old backups Files,

  • Step #1: Follow the same steps up to step 3.
  • Step #2: Now enter the path,
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~/Library/Application Support/MobileSync/Backup/

  • Step #3: Remove all the old backups from there too.

So, I guess that this cover story solved your Mac Storage issues.

Delete Other Volumes and Free Up Space on Mac

Disk Utility Window will show finalize space available on your mac, that we can see in any account if your Mac has multiple accounts. Also, Some users are worried about Other Volumes on Disk utility showing big space that can’t delete. Because, we can delete data from another account in the same device using Disk utility, So Backup won’t delete if you are taken through the other account on the same make. To delete these types of secondary account data, You can delete the whole account under the Mac System Preferences.

Conclusively, Remove unused account if you are not using from Mac. Below the steps for Delete Account from an Administrator account on Mac.

Delete Account on Mac to Free Other Volumes on Mac Disk Utility
Delete Account on Mac to Free Other Volumes on Mac Disk Utility
  1. Go to the Apple logo on Mac.
  2. Next, select the System Preferences option.
  3. Now, Click on the Users & Group option.
  4. Select Admin account and Tap on (-) sign to delete account and Data completely from Mac System.
  5. That’s it. [Make sure, before deleting the process, Keep a backup of your important data to another device]

MacBook Won’t Start and Boot: Startup Disk Full Mac Won’t Start

Go to the Disk utility window during the booting process of your Mac. in such case, your mac won’t login, so you have to manage Disk in the recovery mode using the below steps for Intel and M1 Mac.

For M1 Mac

Turn off and shut down your Mac. Now, press and hold on to the Power button until your Mac see the Startup volume and Options on the screen. Click on Options > Next you will see the macOS Recovery window, then continue, and see the Option for Disk Utility. Delete or Manage Partition on Mac using the option, Erase and Partition at top of the window.

For Intel Mac

Turn off and Turn Mac, Quickly Press and Hold on  Command + R. Until your See the macOS Utility window on your Mac screen. Now, the Last option is Disk Utility, Click on it and Analyse which Drive and Volume used your Mac’ local storage. Delete unused Volume, And Drive Partition easily from the Disk Utility window. That’s it. [Showing in above solution]

  • Secondly, Still not fixed and Showing the same problem, then we can reinstall Latest MacOS On Mac from the macOS utility window screen.

Get More:

>Tips to Delete Other on Mac

>Clear Purgeable space on Mac

Jaysukh Patel
Jaysukh Patel

Jaysukh Patel is the founder of howtoisolve. Also self Professional Developer, Techno lover mainly for iPhone, iPad, iPod Touch and iOS, Jaysukh is one of responsible person in his family. Contact On: jaysukh.pharma@gmail.com [OR] admin@howtoisolve.com

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