Apple launched HFS or the Hierarchical File System as a fact of necessity to be worked with its newly developed 20MB hard disk for Macintosh operating systems. HFS replaced the old Macintosh File System (MFS), which was the original file system for the Macintosh operating system based computers.
Though the HFS file system has got several advance features in terms of performance, sometimes, while accessing volumes based on HFS file system, the volume cannot be recognized by the operating system and hence, the data in that particular volume becomes completely inaccessible. In such a case, you need to look for Mac data recovery software to recover your lost or inaccessible data.
The reason behind the corruption of the file system can be anything ranging from the unexpected system shut-down to virus attack, application malfunction or operating system crash etc.
In case of a possible file system corruption, you can use the 'Disk Utility' (The in-built utility in the Mac OS X) to check for the integrity of the disk and repair the damage. If 'Disk Utility' fails to resolve the issue, you can have another try with the 'fsck'(A command-line utility) to check the file system at the start-up and repair the damage.
Note: If the hard drive of the troubled Mac system is totally inaccessible, then you can either attach the drive with another working Mac machine or run the utilities from the system disk.
If both of the above repairing options fail, then you have to format the drive and reconstruct the file system. Under such a case, you have to restore your data from a valid back-up as with formatting, all your data from the drive will get erased. In case, you do not have a valid backup or failed to restore from the backup, run Mac recovery utility to recover the lost data back.
Among many available Mac recovery applications in the market, EaseUS Mac Data Recovery Wizard is considered to be the most efficient Mac data recovery software to recover any of your lost, deleted, formatted, inaccessible data from the troubled Mac volume/drive irrespective of the cause. The software is pretty compatible with HFS, HFS+, HFS Wrapper, HFSX, FAT file system based volumes and with an interactive GUI, is very simple in use.
Steps to recover data from HFS partition:
Donwload the free trial to scan out your lost data and preview them one by one to check the quality before you pay for it.
Launch the software and go to Quick Recovery, choose the device to scan and then preview the files, if you can't find the lost data, please go back to the main screen and click Deep Recovery.
Deep Recovery uses RAW searching technology that scans your files sector by sector to make sure that all the possible files can be retrieved. It is highly recommended that you try this when other recovery module doesn't work.
Under Deep Recovery Model, you select the device to scan then select the file type you want to recover, the scan process may take a little longer.
Preview the lost data and then decide to purchase the full version to recover.
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