Format the hard drive.
If that doesn't fix the problem, try a different hard drive.
Format the hard drive.
If that doesn't fix the problem, try a different hard drive.
If you're not encountering any serious issues anymore I wouldn't be too concerned with a corrupt file structure and I wouldn't go through the trouble of re-formatting the drive if it's not absolutely necessary.
I've seen threads on the official PlayStation forums with users like us who have file structures that always get recognized as "corrupt" when in the diagnostics menu but it hasn't affected a single other thing operation-wise.
"And the book says: 'We may be through with the past, but the past ain't through with us.'"
rrod
Autobots. Roll out.