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Add a checksum to a disk image using Disk Utility on Mac
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.
Go to the Disk Utility app
on your Mac.If Disk Utility isn’t open, click
in the Dock, type Disk Utility in the Search field, then click .Choose Images > Add Checksum, then select the disk image to add the checksum to.
Click Checksum, then click Done.