Worried on how to repair HFS drive? Mac system often uses file systems wherein HFS is one of the renowned one. But at meantime you can't ruled out of happening HFS partition corruption. Sometimes due to catalog corruption, volume header damaged, improper repartitioning of volumes etc would turn into HFS volume damaged that can be sorted out after repair hfs drive. To do so one can make use of disk utility for resolving issue associated to drive. Apart from running FSCK command in command line when system is started at single user mode will be beneficial.
Unfortunately if all these failed then you must reinstall OS X properly to repair hfs drive. And for tackling data loss which appeared after OS X re-installation, one should perform data recovery. This can be done by prior backup conveniently. In case of non availability of adequate backup one can take help of Mac Data Recovery Software. This is the most reliable and efficient way of regaining corrupted, lost or formatted data. Moreover it provides secure and user interactive method for recovering missing Mac data. With having this incredible and effective tool you no longer have to worry for repair hfs drive. So go for it !!