"mac os x can't repair the disk" DOESNT always mean something

Ive got 18 harddrives, I DO know what im doing, however using a dock, diff harddrives, NO problem

However when using diff. sata connectors on internal drives 'used externally' , Ill get the --mac os x can't repair the disk

In THESE cases, it doesnt mean squat. The drives using diff. sata connectors (laptop drives, diff ones, toshiba hitachi),.... work fine on WIN machines.

however ALL 4 of my Macs, ill get a ---mac os x can't repair the disk----- And i KNOW FOR CERTAIN 100% the drive is fine, perfect.

So, for those getting this message, it doesnt necessarily mean a thing at all.