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#Explore mac hard drive space occupied free#

Large amounts of hidden disk space may also indicate errors in the file system.

For example, here’s how you delete a snapshot created by CCC. In order to reveal and delete such snapshots, please use the corresponding third-party apps. You can check for presence of any third-party snapshots using tmutil listlocalsnapshots / command in Terminal. Toward the purgeable space, but toward the still hidden space. Unlike the Time Machine snapshots, the third-party snapshots are not counted

If you are using third-party backup tools such as Carbon Copy Cloner (CCC), they can create their own file system snapshots.

The purging may be additionally delayed if the Time Machine is in process of backing up. Please allow some time (from few seconds to few minutes) before the system completes reclaiming the purgeable space in the background.

You may temporarily see the hidden space being “borrowed” by the corresponding amount. Also, just after you delete the purgeable space,.However, the system often delays updating the size of the purgeable space by few minutes.ĭuring this delay, you may temporarily see the hidden space being “borrowed” by the equal amount.ĭaisyDisk will automatically refresh (without rescanning) the numbers or hidden and purgeable space after the system updates them globally. When you delete a file or folder and Time Machine is turned on, the system may not delete the files entirely, but move them to the purgeable space,Ĭausing it to grow by the corresponding amount.Usually this space is used by the file system itself. Note that some small amount of hidden space (a few GB) may still remain even after scanning as administrator.And in reverse, some other folders will grow in size correspondingly, and restricted files and folders will become visible here and there on your disk.

The hidden space should disappear, or become significantly smaller by size. This approach is recommended in Apple's official WWDC 2018 video which mentions DaisyDisk as an example (begin at 9:22). DaisyDisk will not read the actual content of your private data, only the metadata (such as name and size). To override your previous choices, you can open System Preferences > Security & Privacy, go to the Privacy tab and add DaisyDisk to the “Full Disk Access” list. In case if you deny the access, the size of hidden space will grow by the corresponding amount, while some folders on the map will appear empty. The system shows you the corresponding dialogs and remembers your choices the first time you scan your disk. Photos, Contacts and other privacy-sensitive folders. macOS Mojave or later: You may see a lot of hidden space if you deny DaisyDisk access to your Calendar,.Space missing due to file system errors.File system overhead (2-3 GB is normal for the startup disk).System stuff, like Spotlight index, document versions, etc.Home folders of other users on the same Mac, if any.still hidden - the ultimate remainder of unaccounted space, usually consists of:.This item may include some invisible system volumes and the volumes you created yourself.

#Explore mac hard drive space occupied free#

other volumes (covered in a separate article) - sub-volumes within the same physical disk that share its pool of free space (a new feature of APFS).

purgeable space (covered in a separate article) - mostly local snapshots of Time Machine,Īnd also swap files, sleep images and other temporary system files.

The following items typically contribute to the hidden space: When you click on it, you see a further breakdown of the hidden space: DaisyDisk detects the remainder of space and displays a special item hidden space of the corresponding size. This happens because there may be some restricted folders, which DaisyDisk couldn’t scan with default permissions, Sometimes the total size of all scanned files and folders on a disk still don’t make for the entire used space on that disk.