Tag: Linux Recovery

Resolving Root inode is not a directory. Clear Linux Error

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In Linux operating system, you can check the integrity of file system and hard drive. This command resolves majority of issues with hard drive and file system, avoiding need of Linux Data Recovery. This command-line utility runs in five phases. In first phase, it checks data blocks and their size, in second phase, it checks for path names. In the following phases, connectivity, references counts, and the cylinder groups are examined respectively. If the fsck fails in second phase, situations can be very drastic.

The fsck may fail in the second phase due to iNode issues. In a practical scenario, you may come across the below error message while checking integrity and consistency of your system through fsck utility:

-Root inode is not a directory. Clear?-

After this error message, you can not access your Linux hard drive and encounter serious data loss situations. In order to gain access of your valuable data in such circumstances, you need to find out the cause of this problem and perform Data recovery linux by sorting it out.

Grounds of the issue:

This problem occurs after corruption to the root iNode. The corruption might be caused by improper system shutdown, virus infection, system crash, and more.

In Linux file system, iNode is a data structure that holds all the critical information of files and directories, except their names and contents. It is a unique number, assigned to every file/directory. Every file/directory has an individual iNode. The file/directory is accessed through iNode only.

In the particular situation, the root iNode of Linux system is damaged. It is generally the second iNode. Root iNode is first iNode to file system and it represents starting point or root of file system.

If you select ‘Yes’ in above error message, it will remove parent entry of every iNode from root directory. In third phase of the fsck utility, root iNode is tried to recover, but you encounter further error if the process fails:

-Cannot Allocate Root Inode-

In such critical situations, Linux Data Recovery is required to extract lost data. The recovery is best possible using Linux Recovery software, which perform absolute recovery in the majority of data loss situations. With read-only conduct and simple graphical user interface, the applications are completely safe and easy to use.

Stellar Phoenix Linux Data Recovery is the most advanced application to recover lost, missing, and inaccessible Linux data. It recovers from Ext4, Ext3, Ext2, FAT12, FAT16, and FAT32. The software is designed for all distributions of Linux operating system including SUSE, Debian, Red Hat, and Fedora.

Currently has loop partition layout Linux Error and Recovery

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Linux-based hard disk is divided into two major types of partitions: data partition and swap partition. Data partitions are the basic partitions that contain system data, including that for starting and running the system in root partition. On the other hand, swap partition is responsible for holding hard disk extra memory and expanded system’s physical memory. In most of the Linux systems, fdisk is used to initially set the partition type. These partitions can be ext3 journaled, ext2, Reiser FS etc. But, sometimes you may observe certain issues with these partitions. Thus,Linux Recovery experts suggest maintaining an updated backup of important data that is stored on hard disk.

Consider a scenario, you try to mount a Linux partition to install a Linux distribution and encounter a similar error message:

“/dev/hdg currently has loop partition layout.”

Where, name of partition, i.e. /dev/hdg, can vary. It can be /dev/had, /dev/sda tc.

Cause

Possible reasons of above error message are listed below:

If you are using a third-party boot loader on primary hard disk’s MBR, Disk Druid may fail to recognize your partitions.

Partition layout is damaged

Disk Druid is the tool to manage partitions and associate mount points. It is a graphical tool that displays existing disks and partitions in a defined format.

Solution

You can follow these steps to recover from the situation:

If boot loader has been the issue, uninstall the current boot loader and install GRUB on MBR of primary hard disk.

If partition table is damaged, backup all exiting and information files and folders and repartition the drive. Restore lost data using backup. If backup has not been taken, is damaged or incomplete, you can use commercial tools of Linux Recovery.

Linux Data Recovery software are advanced recovery applications that can scan drive affected from logical data loss. These applications use som algorithms that completely analyze existing disk structure. After locating missing files and folders, they compare their location information with that of existing ones. All the procedures are safe. Also, the interface provided is interactive and offer easy Linux Recovery options.

Stellar PhoenixLinux Data Recoveryis a complete and advanced tool to recover lost data from Ext2, Ext3 and Reiser FS formatted drives. It offers various advanced recovery options, like RAW File Recovery, Create Image, File Filter, Append Header etc. The software is compatible with almost all Linux distributions including Red Hat, SUSE, Debian, Turbo Linux etc.

Linux File Recovery When Inaccessibility Causes Data Loss

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File system is the core component of any operating system, and Superblock is the most significant data structure for a Linux. Linux supports various files systems, which include Ext2, Ext3 and Ext4. Superblock comprises of numerous data structures, which are used by the file system manager for maintaining file system integrity. In case Superblock gets damaged, you can restore its duplicate copy to make the system accessible. Alternative Superblock is maintained by Linux operating system to prevent data loss and need of Linux recovery solutions.

As a practical example of Superblock corruption in Linux system, you may run across the below error message when you attempt to mount a Linux hard drive volume-

“read_super_block: can’t find a reiserfs file system”

This error message renders your significant data inaccessible and lead to severe data loss. In order to retrieve your precious data, you need to identify the root of the problem and perform Data recovery Linux by fixing it.

Ground of the issue One of the major reasons of this issue is Superblock corruption. You may face Superblock corruption due a wide range of reasons, which include- 1) Improper system shutdown 2) Hardware crash 3) Virus infection 4) Kernel bugs

Solution To sort out this problem of Linux system, try out any of the below methods-

* Run # reiserfsck –check /dev/sda1 command on the affected Linux hard drive volume. It checks Superblock corruption. * If the above command indicates Superblock corruption, then run # reiserfsck –rebuild-sb /dev/sda1 command. It rebuilds damaged Superblock. * Restore data from the most recent and valid backup. It is the most efficient solution to work around such problems.

When all else fail, Linux Recovery software come for your help. The applications are particularly designed to perform in-depth scan of whole hard drive and extract all missing, inaccessible, and deleted data from it.

Group Descriptors Corrupted In Linux Operating System

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The EXT3 file system in Linux is divided into various block groups. Each block group further contains a data structure called group descriptors that contains critical information about the block. Corruption in group descriptors primarily occurs due to operating system malfunctioning, file system damage, malicious software like virus and more. Two major outcomes of corrupted group descriptors are unbootable system and inaccessible data. To successfully recover the lost data, restore it from the latest backup. In case, no recent backup is available or is invalid, you need to go for advanced Linux Recovery software.

Consider a practical scenario, where you encounter the below error message when you attempt to boot your system:

Uncompressing Linux:…Ok booting kernel

audit(xxx.x….x..:0) : initialized

EXT3-fs error (device hda3):ext3_check_descriptors:Block bitmap for grade 38 not int grade ( block 34799616)

EXt3-fs:group descriptors corrupted.

Mount: error 22 mounting ext3

pivot root ivot_root (/sysroot, /sysroot/initrd) failed: 2

unmount/initrd/proc_failed:2

kernel panic: No init found: Try passing init=0 to kernel

You encounter the same error message each time you attempt to boot your system. As a result of the above error, all your critical data becomes inaccessible.

Cause:

The above error message is encountered when group descriptors are corrupted.

Resolution:

To resolve the above issue and access the data, you need to use FSCK command. This command is mainly used to repair the EXT3 file system. But, if the file system has been badly corrupted, then this command fails to repair. In such circumstances, you need to recreate the file system again by formatting and reinstalling Linux. A clean reinstall of Linux will completely erase all data from the selected Linux volume. For complete and orderly recovery of data after reinstalling Linux, you will need to use powerful Linux Recovery software.

These Linux Data Recovery applications ensure comprehensive scanning of formatted Linux volumes by using powerful scanning algorithms. These recovery tools can recover and restore data after problems like group descriptors faults, Inode table damage and superblock corruption. They are built with highly graphical and interactive user interface that makes them easily understandable without prior technical skills.

Stellar Phoenix Linux Data Recovery is the most efficient and trust worthy Linux Recovery tool. It supports Ext2, Ext3 and ReiserFS file systems based Linux volumes. This read only Data Recovery Linux application gets installed on Windows (Vista, XP, 2003 and 2000) and the affected Linux drive should be connected as slave.