?Like every other operating system, Linux computer also contains a system or boot volume, which is used to boot your system. Boot device is one on which all the boot files and Linux operating system are installed. In some cases, you may encounter boot errors while trying to start Linux-based computer. This behavior may occur due to missing or damaged boot files. In such cases, Linux system refuses to boot and you can not access the data stored on your Linux hard drive. It leads to critical data loss and needs Linux Data Recovery. When you try to boot your Linux computer, you may receive the following warning message: "EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended" After the above error, when you run ‘e2fsck' utility, you face further error messages that resemble the followings: ? TivoMaster:/var/tmp$ e2fsck -y /dev/hda7 e2fsck 1.06, 7-Oct-96 for EXT2 FS 0.5b, 95/08/09 e2fsck: Bad magic number in super-block while trying to open /dev/hda7 ? The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 This behavior of Linux operating system renders all your data inaccessible. In order to access your valuable data, you need to identify the cause of this problem and perform Data Recovery Linux by resolving the problem. Root of the problem This problem may occur after improper system shutdown without unmounting the root file system. After this, the root file system may get damaged and you will face the above stated problem. Resolution You can sort out this problem by formatting the hard drive and reinstalling Linux operating system. After formatting, you need to restore data from the current backup as it removes all the data from hard drive. However, if the backup is not available, Linux Recovery becomes essential. Recovery is possible using advanced tools, known as Linux Recovery software. These software are designed to scan damaged hard drive using powerful algorithms and extract data that can not be accessed normally. They perform absolute recovery in a safe and easy way. Stellar Phoenix Linux data recovery is the most effective tool that insures perfect recovery in all cases of data loss. The software is developed to recover data from Ext4, Ext2, Ext2, FAT32, FAT16, and FAT12 file system volumes. It works well with all major distributions of Linux operating system, include Debian, Mandriva, SUSE, Red Hat, Fedora, and Ubuntu.