Mac OSX is an operating system which it divides hard drives into different partitions known as volumes. There are different file systems present in Mac OSX like HFS, HFSX, HFS+, HFS Wrapper etc. All the information associated to Mac volumes is stored in the volume header, in case volume header is damaged then entire volume becomes inaccessible.
In order to fix the corruption issue you need to perform Mac data recovery by using inbuilt utility provided by Mac OSX that is Disk Utility. This application makes use of advanced technology in order to fix corruption issues in Mac hard drive but in many circumstances it fails to fix the Mac hard drive problem and displays error message.
“Volume Header needs minor repair
The volume Macintosh HD needs to be repaired.
Error: The underlying task reported unfortunate on exit
1HFS volume checked
Volume needs repair
After above error is reported disk verification process is interrupted, and the volume corruption is not fixed. To resolve above error you need to make use of free Mac data recovery tool to repair all the corruption issues.
Cause of Error
You experience above error due to corruption in volume header. After volume header is damaged Mac OSX will unable to recognize volume of the system so it cannot be accessed.
In order to fix Mac hard drive corruption first of all you need to format the hard drive. After formatting is completed all the corruption issue will be fixed but at the same time all the data present in the Mac OSX will be deleted permanently from the system. In order to restore the deleted files and folders you need to make use of backup.
In case you have not preserved backup in advance then you need to make use of free Mac data recovery
tool to restore the lost files and documents safely. This application makes use of extensively advanced algorithms in order to complete the scanning process and restore the deleted documents.