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Add a checksum to a disk image

A checksum is a calculation of all the data on a disk or disk image. You can use checksums to make sure that a disk image, CD, or DVD was copied correctly.

Open Disk Utility for me

Choose Images > Add Checksum, then select the disk image file to add the checksum to.
Click Open, then click Done.

See alsoRestore a disk image to a disk Verify that a disk image’s data isn’t corrupted

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