How To Fix Image Data Corrupted Mac

macOS Monterey 12

macOS Big Sur 11.0

macOS Catalina 10.15

macOS Mojave 10.14

macOS High Sierra

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Table of Contents

Welcome
- Intro to Disk Utility
- View all devices or only volumes
- File system formats
- Partition schemes
- Get detailed information about a disk
- Add, erase, or delete APFS volumes
- Erase and reformat a storage device
- Encrypt and protect a storage device with a password
- Partition a physical disk
- View APFS snapshots
- Format a disk for Windows computers
- Repair a storage device
- Restore a disk
- Create a disk image
- Convert a disk image to another format
- Resize a disk image
- Restore a disk image to a disk
- Overview of creating disk sets
- Create a disk set
- Delete a disk set
- Unmount a disk set or disk member
- Repair a disk in a mirrored disk set
- Add a disk to a disk set
- If a disk in a disk set on Mac fails or is missing
Troubleshooting
Keyboard shortcuts
Copyright

Verify that a disk image's data isn't corrupted using Disk Utility on Mac

The data in a disk image can be corrupted if a problem occurs while it's being copied or if someone modifies it. You can see whether a disk image's data has been corrupted by verifying its checksum, which is a calculation of all of its data. When a disk image is created, a checksum is computed and stored with the image. When you open the disk image, a checksum can be computed again and checked against the stored checksum. If the two checksums match, the disk image's data hasn't been corrupted.

You can choose when to compute and verify checksums. Be aware that doing so can take a long time.

Open Disk Utility for me

In the Disk Utility app on your Mac, choose Images > Verify, then select the disk image that you want to verify.
Click Verify, then click Done.

See alsoAdd a checksum to a disk image using Disk Utility on Mac

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