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‘Superblock does not describe correct file system’ Linux Error

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linux-howto

http://i486.net – HTML clipboard For Linux file systems, Superblock plays a vital role. It defines the file system itself. Linux uses this metadata structure to hold its file system information like file system type, size, mount status and also metadata information about other file system structures. If superblock is found to be corrupt, file system can’t be mounted. This causes data loss and hence needs Linux Data Recovery as the solution. Superblock defines file system type and if it is corrupt, it may fail to give to this information with an error similar to: “Superblock does not describe correct file system” The error also describes that system is unable to read the superblock. Also, if device contains the file system, then its superblock is corrupt and fsck is required with an alternate superblock. By alternative superblock , it refers to its duplicate copies on disk. Linux maintains duplicate copies of Superblock to avoid Linux Recovery requirements. These are located at different disk locations. The primary superblock lies at location 0 and group descriptors 1-6. However backup copies can be located using the following command: # dumpe2fs /dev/sda2 | grep superblock It will display the backup locations of superblock. Using these locations of superblock, file system can be attempted to mount. However if the process fails because of corrupt superblock backups, we need to refresh the file system by formatting the drive. It will create new copies of all file system structures. Lost data can be later restored using backup. However if no valid backup exists, Linux Data Recovery applications can help recovering. Linux Recovery software are the applications to recover lost data using specific scanning algorithms. These applications can carry out recovery in all cases like superblock corruption, inode table damage, group descriptors faults and others. These software offer graphically rich user interface and hence can be used easily. These products are safe for data as are designed as read-only. They offer quality features that assist users in recovery. But the software are not recommended to be installed on same drive to prevent overwriting. Stellar Phoenix Linux Data Recovery is the powerful and safe application to recover data from ext2, ext3 and reiserFS file system based disks. This software supports most of the Linux distributions like Red Hat, SUSE, SlackWare, Turbo Linux, Gentoo, Fedora and others. The application is safe for Ext3 Recovery and can be easily used through its graphical interface, which is rich of features. allen a student of Mass Communication doing research on data recovery software. He is also a freelancer for http://www. stellarinfo. com (General)