Resolve Hard Drive errors and corruption in Mac OS X
Generally users suffer from hard drive error problem in any operating system, including Mac OS X. The main reason for this is the corruption of metadata structure, system files and critical data structure of Mac hard drive and this result in the loss or deletion of stored data. Other problem that may occur is that the system may become unable to be accessed.
So in this situation it becomes important to restore the deleted data it can be done with the available backup. If the backup is not available then user can use disk repair tool which is available with Mac OS X as inbuilt and is capable to handle such situation it is known as Disk Utility. But it may happen that when you run this tool then you may come across the following error:
Verifying volume “Macintosh HD”
Checking Extents Overflow file.
Checking HFS Plus volume.
Incorrect size for file temp468627
(It should be 0 instead of 16464)
Incorrect size for file temp420595
(It should be 0 instead of 84538)
Checking multi-linked files.
Checking volume bitmap.
Checking Catalog file.
Checking Catalog hierarchy.
Checking volume information.
The volume Macintosh HD needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair
Due to this reason the disk utility becomes unable to access and resolve the problem. So in order to resolve the error problem it becomes important to find the root cause of the behavior. Basically the main reasons of the error message are: volume header corruptions, overlapped extent allocation, mount check errors and volume bitmap corruption. Due to all these errors the disk becomes unable to be mounted.
Resolution of the problem
To resolve this problem user will have to format the hard drive and reinstall the operating system. Formatting your hard drive will result in data loss in order to restore the lost data User can use third party software known as Mac Hard Drive Recovery Software. This software has powerful algorithm that performs advanced scanning of the hard drive and finally recovers the deleted data efficiently. This tool has easy user interface due to this it is very easy to use.
