Disk Repair is a fake computer optimization and analysis program that displays false information so that it can scare you into thinking that there is something wrong with your computer.

Disk Utility is Apple's go-to macOS app for finding and repairing common disk errors, but if it's your Mac's internal disk that's the problem, then your Mac might not even start up into macOS.

It won't cure all of your Mac's ills, but a quick and easy first step toward bringing a sluggish Mac back to health is using OS X's Disk Utility to repair disk permissions. Matt Elliott Senior Editor ...

Repair Disk isn’t the first option you should choose if your Mac is ailing, but it is helpful when (for example): Performance has degraded Data is missing You are experiencing degraded system ...

There are a variety of maintenance routines that people can run in OS X, including the disk verification and permissions repair that come with the system, along with scripts such as cache cleaners ...

I've got a Late-2009 Aluminum iMac (27"). It crashed last night, so I restarted and it booted into the restore disk. I tried to verify/repair the disk and got: I thought I had a recent time machine ...