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Fixing “Block bitmap for group 0 not in group…”

by anonymous

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Linux file system also contains critical information related to the files saved on your hard drive like that of other operating system. The structure of the Linux file system is divided into various blocks, which are organized into block groups. These block groups consists of block group descriptor and a copy of superblock. A block group descriptor saves the destination of inode bitmap, block from where inode table starts, and block bitmap Corruption in group descriptor primarily results in an error message that makes the Linux operating system unbootable.

In such cases, the data saved in the Linux based hard drive becomes inaccessible. To access the data in such cases, the user needs to opt for an updated backup. However, if updated backup is unavailable or corrupt, then the user needs to use an effective third-party Linux Data Recovery application.

Consider a practical case, where you attempt to boot your Linux based system and encounter the below error message:

“EXT2-fs error …ext2_check_descriptor: Block bitmap for group 0 not in group !

EXT2-fs: group descriptor corrupted”

Your system becomes unbootable after the occurrence of the above error, rendering to inaccessibility of hard drive data.


As described in the error message, the group descriptor is corrupted or damaged.


The above error message can be resolved by taking the below actions:

•    You will need to run FSCK command with alternate data structures.

•    If the problem persists, then you will need to format your hard drive and re-install the operating system.

The later resolution enables you to overcome corruption in block group descriptor. However, the resolution also has a drawback that it deletes all the data from your hard drive. In such cases, the deleted data from the hard drive can be recovered by using advance Linux Recovery application.

A Linux Recovery software performs a complete scan of your formatted hard drive and recovers all the lost data. The software is built in wizard-style interface, which makes it easy to understand without any technical skills.

Stellar Phoenix Linux Data Recovery takes complete guarantee of recovering all formatted data post formatting. The Linux Recovery utility supports recovery from Ext4, Ext3, Ext2, FAT file systems based volumes. It is compatible with SlackWare, Gentoo, Ubuntu, SUSE, Mandrake, and more Linux distributions. Its demo version allows you to preview all the recoverable files.

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