| HFS (Hierarchical File System) is an advanced file | | | | inaccessible. |
| system developed by the Apple Inc. It is the | | | | Particularly, if you face any of the above issues and |
| predecessor of HFS Plus file system. Along with the | | | | can not identify the causes, you are recommended |
| hard drives, it is also used on removable storage | | | | to check file system for integrity using the fsck. |
| media. It is considered as a reliable and stable file | | | | Locating and fixing HFS file system corruption using |
| system for Macintosh systems. However, some | | | | fsck: |
| situations like accidental power failure, hardware | | | | In case of system failure, you need to restart the |
| failure, virus infection, and improper system | | | | system and then run fsck utility to perform Apple |
| shutdown, may cause damage to HFS file system | | | | Recovery. Follow underwritten steps to check |
| and cause data loss. In such situations, Apple | | | | consistency of HFS file system: |
| Recovery is required to extract lost data. | | | | Unmount the HFS file system using umount |
| How to distinguish file system corruption: | | | | command. If system is running in single-user mode, |
| You may have a corrupt HFS file system, if you | | | | you need not to unmount the file system. |
| encounter some of the below symptoms- | | | | Run fsck with -p option. It enables you to resolve |
| The files contain incorrect or garbage data. | | | | various file system problems. If it finds any |
| The files are truncated or the data is missing. | | | | correctable problem, it fixes them. |
| The files disappear or alter the locations without any | | | | If it does not solve the issue, check for other causes |
| apparent reason. | | | | of the problem like hard drive formatting. |
| Error messages indicating the probability of file | | | | Hard drive formatting is the process of installing a |
| system corruption appears in system log or the | | | | new file system on affected drive. However, it |
| system console. | | | | removes all the data from the drive and cause |
| You experience problems in listing files in the | | | | significant data loss. In such cases, Apple Recovery |
| directory or changing directories. | | | | Software come for your rescue. |
| System does not boot up and it becomes completely | | | | |