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    Supported Disks

    Any disk or data source connected to your Mac and recognized by macOS as a file system can be scanned with DaisyDisk, including but not limited to:

    Installation
    • Internal
    • External
    • Removable
    Physical media
    • Rotational HDD
    • SSD
    • Flash & memory cards (SD, CF etc.)
    • Optical (CD, DVD, Blu‑ray)
    Interface
    • USB
    • Thunderbolt
    • Firewire
    • Network (NAS, AFS, Samba, NFS, WebDAV, Novell, Windows, FTP via FUSE)
    • Virtual (FUSE, disk images)
    File system
    • Apple APFS, HFS+, HFS
    • Microsoft NTFS*, FAT*, exFAT*
    • More file systems via FUSE
    • Read-only by default, requires third-party drivers for read-write access.

    Cloud Scan

    You can connect your cloud storage and scan it over network like a local disk, without allocating any local disk space. Currently supported cloud services are:

    • Dropbox™
    • Google Drive™
    • Microsoft
      OneDrive™
    • Box™

    Learn more about cloud scan >

    Speed of scanning

    Thanks to low-level disk access, parallelization and optimization, DaisyDisk achieves the highest possible speed of scanning. You can analyze your space usage more readily, because it’s almost instant and doesn’t cause distraction from your workflow.

    According to our benchmarks, DaisyDisk outperforms any existing disk scanning software by 6 — 32 times.

    The scanning time depends on the type of the media, file system and the number of files on the disk:

    • HFS+ SSD startup disk: 6-12 seconds
    • APFS SSD startup disk: 12-20 seconds
    • HFS+ HDD startup disk: 20-40 seconds
    • APFS HDD startup disk: 40-60 seconds
    • NTFS, FAT, exFAT: 3-5 minutes
    • Time Machine: 20-30 minutes

    Hidden space

    Hidden space is the unaccounted difference between the total used disk space and the total of all files that have been available for scanning.

    Source of hidden spaceSolution
    Lack of access permissions
    • Scan as Administrator.
    • Grant full disk access.
    Purgeable space & system snapshots
    • Detect and delete snapshots.
    • Detect and delete purgeable space.
    About This Mac > Storage > Other
    Mostly consists of the snapshots and purgeable space, see above.
    Other reasons
    Learn more about hidden space >

    File preview

    Built-in QuickLook allows you to instantly preview files of any type — documents, photos, videos etc. — using the Space key on the keyboard.

    Learn more about preview >

    Safety

    • Safety stoppers prevent the user from accidentally deleting system-critical components.
    • No automated cleaning is performed — this excludes the potential risk of damage to system and application components.
    • The user makes the informed decision which files are no longer needed and can be deleted.
    • As with any deletion tool, precaution must be taken not to accidentally delete user’s files that they still need.

    Learn to identify what is safe to delete >

    Privacy

    • Scans only file metadata — name and size — and not files’ content.
    • Does not analyze or collect any of your data.
    • Does not transmit any data outside of your computer.
    • Does not track any statistics or analytics.

    See our privacy policy >

    System Requirements

    Supports the latest hardware and software:

    CPU type
    • Apple M4 (ARM, 64‑bit)
    • Apple M3 (ARM, 64‑bit)
    • Apple M2 (ARM, 64‑bit)
    • Apple M1 (ARM, 64‑bit)
    • Intel (x86, 64‑bit)

    Legacy versions available for:

    • Intel (x86, 32‑bit)
    • PowerPC (PPC, 64‑bit, 32‑bit)
    Operating system
    • macOS Sequoia (15, latest)
    • macOS Sonoma (14)
    • macOS Ventura (13)
    • macOS Monterey (12)
    • macOS Big Sur (11)
    • macOS Catalina (10.15)
    • macOS Mojave (10.14)
    • macOS High Sierra (10.13)

    Legacy versions available for:

    • macOS Sierra (10.12)
    • macOS El Capitan (10.11)
    • macOS Yosemite (10.10)
    • macOS Mavericks (10.9)
    • macOS Mountain Lion (10.8)
    • macOS Lion (10.7)
    • macOS Snow Leopard (10.6)
    • macOS Leopard (10.5)

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