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29 July 2019  Jennifer Thatcher  Technology Manager of Test Dept.
 

Summary
Many Mac users will inevitably receive the notification “Your disk is almost full”. How to fix this problem? In this article, we will cover some tips on how to quickly free up disk space as well as tips on data recovery if you accidentally delete files in this process.



Many Mac users may receive the notification “Your disk is almost full” which reminds you to free up your disk space on Mac. At such situation, you should figure out what takes your disk space and delete some unused files.
your disk is almost full
You can view your storage usage by selecting [About This Mac] in the Apple menu and switching to the Storage section. When you check the storage bar, you can determine the unneeded files for removal in order to free up your disk space on Mac.
check mac storage usage

How to Free up Disk Space or Delete Unnecessary Files?

Part 1. Empty Your Trash

Like Windows, Trash in Mac is similar to the Recycle Bin in Windows. Files we deleted usually will be moved to Trash instead of deleted permanently. If needed, the file can be restored from the Trash. It is recommended that you can empty the Trash folder once the files in it are useless.
mac empty trash
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Part 2. Delete Temporary Files

Cache files will be saved by default when users surf Internet with Mac. These files are space eaters too. You can clear up the cache files to free up your disk on Mac. On the desktop, press [cmd + Shift G], and click [Go] > [Go to the folder]. In the box, input [~/Library/Caches/] to open the Caches folder and delete the unnecessary files.
mac cache

Part 3. Remove Unused Programs

Programs can take up much space on Mac. If they are unused, you can uninstall them. In the Launchpad, long press the program downloaded from Mac App Store to shake, then click [X], and the program will be deleted.
drag to trash mac
If the program is downloaded online, you can drag and drop it to the Trash, then empty the Trash. The program can be deleted.

Part 4. Delete Large Backups

If you synchronize your iPhone or iPad files to Mac, these files often eat off a huge amount of disk space. If you want to delete them ,you can press [cmd + Shift + G] to open the path [~/Library/Application Support/MobileSync/Backup]. Then you can delete the backups.
delete mac backup

Part 5. Clear Downloads

All files downloaded online can be saved in the Downloads folder, such as images, videos, programs. If you have installed or used these files, you can delete them to free up your disk space on Mac. Remember to empty the Trash later.
delete mac downloads

Part 6. Delete Unnecessary Mails

If you often use the mail application, mails and attachments can be saved, which can take up much disk space. Click [Mailbox]; select [Erase Deleted Items] and [Erase Junk Mail] to delete unnecessary mails.
delete mac email

Part 7. Remove Language Resources

The Mac system supports multiple languages. Each language resource may eat off your disk space. If you only need single language on Mac, you can remove the other language resources.

Part 8. Optimize Storage via iCloud

iCloud is the cloud service provided by Apple Inc. You can use iCloud to free up your disk space on Mac. In [System Preferences], click iCloud. Check [Optimize Mac Storage] and [iCloud Photo Library].
optimize mac storage 1
optimize mac storage 2
If you don’t backup before clearing up the disk space and accidentally delete some files, it is recommended that you use Renee Undeleter to restore your files. Renee Undeleter supports file restore, format recovery, partition recovery, helping you restore mistakenly deleted files and missing data.

How to Recover Accidentally Deleted Files on Mac?

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Step 1. Download and install Renee Undeleter and open it.
Step 2. Click [Fast Partition Scan].
launch Renee Undeleter Mac version
Step 3. Select one partition to save the file.
select target drive to scan
Step 4. Select [Fast Scan] or [Deep Scan]; then click [Next].
select scan file format for mac
Step 5. In the [Customized Settings] option, select the target file types.
select scan file format for mac
Step 6. After that, select the target files and click [Recover].
preview scan result before recovery