System crash, power surges, and system freeze are some common situations, which cause improper system shutdown. In Mac OS X machine, you need to hold the power button to reboot your system improperly when it crashes or stops responding. In a few cases, your system may boot properly after unexpected system shutdown. However, under some situations, it may refuse to boot up and give you some error messages related to missing/corrupt system files. In such situations, you can not get into your Mac machine to access your valuable data from it. This behavior leads to severe data loss and requires Mac data recovery to be fixed, if there is no backup in place.

You may face any of the below behaviors after turning your Mac computer off, improperly:

You see a blank blue or gray screen when you repeatedly try to reboot your system after shutting it down incorrectly.

You can get into the Disk Utility through boot DVD of Mac OS X 10.5 Leopard operating system, when you attach a new keyboard to your system, but can not repair or verify the hard drive.

You come across 'File Read Error' or 'Volume Read Error' messages while trying to verify or repair the affected Mac OS X hard drive.

It is possible to boot your system and get into Boot Camp, where you can select the Windows operating system and boot your machine properly.

This behavior occurs due to improper system shutdown, which may cause any of the below problems:

Damage to open files or directories thus making them inaccessible.

Operating system gets damaged and next reboot of Mac operating system fails.

The hard drive volume or its file system is damaged. Operating system is unable to identify the volume.

In all such cases, you lose access of your mission-critical data and face serious data loss situation. In order to perform data recovery Mac in such circumstances, you are required to restore data from the most recent and valid backup.

However, some users do not maintain backup and need Mac file recovery in such cases. Recovery is best possible using powerful and advanced Mac recovery software. They offer quick and easy recovery in all possible data loss situations.

Stellar Phoenix Macintosh Data Recovery software with interactive and rich graphical user interface, salvages inaccessible, deleted, lost, or missing files/directories from your Mac OS X hard drive. The software Recover mac files from HFS, HFS+, HFSX, HFS Wrapper, and FAT file system volumes. It can be used with Mac OS X 10.6 Snow Leopard, 10.5 Leopard, 10.4 Tiger, and 10.3.9 Panther.