you for reaching out to the Community regarding your issue, although I am sorry
to hear that you are experiencing issues with your file. Can I ask when you get this error message? A disk error generally sounds like a windows problem but I'm not sure in this case. Do you get the error when opening Quicken or trying to access your file? Did you have your Quicken File stored on a disk prior?
If you would like to try loading a backup we should be able to do so with the article down below.
Once we get some more information we'll see what we can do in order to resolve the issue you're having.