Disk Utility User Guide
Broadly, a checksum is the result of a mathematical calculation run on a particular file — if the file hasn't been altered, the checksum you calculate will match the checksum provided by the.
In this article we will show you how to disable the Disk Image Checksum Verification feature of MacOS. Disable Disk Image Verification on Mac OS. Open a terminal and type the following command: defaults write com.apple.frameworks.diskimages skip-verify -bool YES; Disable this feature, only if you use disk image from trusted sources. My husband downloaded it on his mac and it worked, so I transferred it to my computer via USB drive and it worked there too! I have, from time to time, had issues with damaged downloads. Usually switching to another web browser, rebooting the router did it for me. But a checksum is a checksum and the version of the OS does not matter as the checksum is inherent in the file not the OS. – Steve Chambers Nov 11 '19 at 16:16. If the checksum only took a few seconds, I doubt anyone would ever wish to turn it off. However, for large images like CD images, this can take minutes to perform. The only way (previous to learning about this hint) to stop it was to click the 'Skip' button. It's precisely the length of time that causes people to want to turn it off.-Sean.
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.
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.
Disk Utility User Guide
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.
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.
Sha256 Checksum Mac