How do I disable disk checking?

If it's scratched, there are programs that can recover data from such disks. You don't need all the data, just specific files that it's looking for, I don't remember which ones. Recover the data, create an image, and that's it, no problems.
Winner, I have a disk check on version 3.1, unfortunately. It might be due to the Bukovskaya version, but still.