Mac Data Loss in HFS Based Volumes in Mac OS X

Apple has developed various file systems to be used in Macintosh operating system based computers, namely: HFS, HFS plus, HFS Wrapper etc. Among these, HFS or the Hierarchical File System has been developed over the original Macintosh File System (MFS) designed for the first Mac hard drive by Apple.

MFS used to store all the information regarding files and directory listings in a single file and the system had to search for long in order to generate the files showing the list of the files in a particular folder. HFS came up with a new theory of 'Catalog file', hence, the process became easier. However, in case of a system crash or power surge leading to unusual shut down of the Mac system cause serious discrepancies in between the file system directory. After such as a situation, the data in the affected file system based volume becomes inaccessible and you badly need a Mac recovery utility to recover your data into originality.

Possible Errors:

Following are some of the errors messages that you can come around, when there is an error related to the file system in a Mac based computer:

“-35 No such volume; volume not found”

“-56 no such drive (tried to mount a bad drive num)”

“-57 not a mac diskette (sig bytes are wrong)”

Causes:

In case of HFS file system, the drives cannot retain any information regarding their activity prior to the unusual shutdown caused by the power surge or system failure. Hence, the Mac system can't be able to locate the data in it and eventually, the data seems lost or inaccessible.

Solution:

The first thing you should do is to check the consistency of the drive and identify the error and repair the file system.

Below steps may guide you to resolve the error:

• Use 'fsck' command and Disk Utility tool in order to repair the corrupted HFS based volume.
• Try installing the multiple boot loader, installed in your computer and reboot.

If the above fails to resolve the error, then you have to format the volume and repartition it. After partitioning the drive or volume, you have to restore the data from the updated backup, failing to which, take the help of a Mac data recovery software.

Stellar Phoenix Macintosh Data Recovery software is indeed an immensely helpful Mac recovery utility that can recover any of your lost, deleted, formatted or inaccessible data from HFS, HFS+, FAT and HFS Wrapper file system based volumes.