• DaisyDisk Icon
  • DaisyDisk
  • Tech Specs
  • Pricing
  • Support
  • Buy
  • User Guide

    Hidden disk space

    This feature is not available in the Mac App Store version of DaisyDisk.

    Sometimes the amount of “used” space on a disk may appear greater than the total size of all scanned files and folders on that disk. This is normal. The difference is usually taken by the file system overhead and system stuff like Spotlight index, but in certain cases a significant amount of disk space may be hiding in other users’ accounts or folders that are normally not visible to you. In order to reveal those folders you should scan the disk as administrator.

    (hidden space) is a virtual disk map item that only appears when the total size of restricted files is significant, so you can see whether it’s worth rescanning the disk as administrator or not.

    Large amounts of hidden disk space may also indicate to file system errors. Follow our troubleshooting guide for details.

    Table of Content

    Using DaisyDisk

    • Disk overview, scanning
    • Understanding the disk map
    • Locating space wasters
    • Previewing
    • Deleting files

    Advanced features

    • Scanning as administrator
    • Parallel scanning
    • Local snapshots, versions and Time Machine
    • Hidden disk space
    • Tips and tricks

    Registration

    • Why purchase?
    • Registering DaisyDisk

    FAQ

    • DaisyDisk versions
    • Keyboard shortcuts and multi-touch gestures

    Troubleshooting

    • Troubleshooting
    • Oddities with disk space calculations

    See also

    • Version 4, English
    • Version 3, English
    • Version 2
      • English
      • Русский
    • Version 1, English
    HomeUser GuideVersion 3EnglishHidden disk space

    Links

    • Our store
    • Mac App Store
    • Terms of use
    • Privacy
    • Cloud Privacy

    Support

    • User guide
    • FAQ
    • Find license
    • Get in touch
    • Release log

    Company

    • About
    • Blog
    • Media reviews
    • Affiliate program
    • Versions archive

    Social Networks

    • X
    • Instagram
    • YouTube
    • Facebook
    • Student discount
    © 2008-2025 Software Ambience Corp. All rights reserved. Apple® and Mac® are trademarks of Apple Inc. The media logos are intellectual property of their corresponding copyright and/or trademark holders. DaisyDisk® is a registered trademark of Software Ambience Corp.