Linux Community Magazine

Are you resizing your Linux hard drive partitions using Gparted utility? Create an absolute backup of your valuable data before your proceed. Gparted provides you advanced and easy methods to perform a number of operations on your Linux volumes. However, in some cases, re-sizing the partition with Gparted utility can become very problematic. It may corrupt the volumes and cause critical data loss situations. In order to recover lost data in such circumstances, Linux Data Recovery becomes need of hour.

Gparted is an inbuilt tool in Linux operating system, which enables you to create, resize, deleted, copy, move, or check hard drive partitions, and file systems on partitions. It also creates partition table on hard drive and enables/disables the partition flags like hidden and boot. It is helpful for reorganizing disk usage, creating space for new OS, mirroring one volume with another, and copying the data stored on hard drive.

Sometimes, while resizing the Linux hard drive partitions through Gparted tool, the process may gets terminated with read/write errors. After this alarming incident, hard drive doesn't mount at all and gives you further errors.

At this point, if you run the fsck utility after restarting the problem remains intact. Furthermore, you encounter further error messages. The situations keep getting more and more serious at every attempt of solving this problem. Linux superblock may get damaged, and give you the indication of file system corruption.

The problem can be indicated by various error messages, such as:

"Superblock corrupted, run with -b 32768"

Some warning messages may also occur, which indicates the the device is busy and it cannot be accessed.

Redundant copies of the superblock are maintained by Linux file system. You can fix this issue by using any of such copies. You can search alternative superblock using "mkfs -n" command.

However, if you cannot find a superblock that is free from corruption, you need to format the hard drive and reinstall operating system. Although, this method can fix up the problem, but also removes all the data from hard drive and creates need of Data Recovery Linux.

You can recover Linux data with the help of third-party Linux Data Recovery software. The applications enable you to perform Linux data Recovery on your own as they have simple graphical user interface.

Stellar Phoenix Linux Data Recovery is the most advanced and widely used application to perform absolute recovery of lost Linux data. It works well with all major distributions of Linux operating system, such as Red Hat, Debian, SUSE, Fedora, and Ubuntu. The software recovers lost data from Ext4, Ext3, Ext2, FAT32, VFAT, FAT16, and FAT12 file system volumes.

Ext3 is the most commonly used and stable file system of Linux operating system. This journaled Linux file system divides hard drive space into blocks. These blocks are managed in block groups. Every block group is defined by an individual data structure, which stores critical information, known as Group Block Descriptor. Every block group is assigned data structure to access it.

The data structure is also useful because it contains inode table, inode bitmap, and location information of block bitmap. The group descriptors are arranged sequentially and together create group descriptor table. In such situations, the block group descriptors get damaged and your system becomes inaccessible. It causes data loss and requires Linux Data Recovery if there is no backup in place.

When the Group Descriptors get damaged, the entire Linux file system is considered corrupt. Corruption is generally caused by unexpected system shutdown, internal system errors, virus infection, and other such cases. Since the group descriptors are damaged, Linux machine does not boot up and shows various error messages similar to the following one:

"EXT3-fs error: ext3_check_descriptors / group descriptors corrupted"

For every block group in Linux, group descriptor table is positioned immediately after the copy of superblock. Linux duplicates the group descriptors for every block group to avoid data loss and the need for Data Recovery Linux in case of file system corruption. Only the first copy of block group descriptors is used when system boots normally.

You can try repairing the damaged file system in such situations using fsck command-line utility. The fsck tool checks integrity of your Linux hard drive, finds errors on the drive, and tries to fix them. It mostly fixes minor file system errors. However, extensive damage can not be handled by fsck. In such situations, you need to replace the damaged file system with a new one.

A new file system can be created by formatting the hard drive and reinstalling the operating system. Formatting makes your hard drive new, removing all the errors, applications, operating system, and data. Although, it sorts out the problem, it also leads to severe data loss and you require Data Recovery Linux to get your data back.

Recovery can be done using advanced third-party tools, known as Ext3 Recovery software. These software employ advanced scanning algorithms to ensure absolute recovery in all data loss situations. With non-destructive behavior and interactive design, they are totally safe and simple to use.

Stellar Phoenix Linux Data Recovery software helps you to recover valuable Linux data from almost all types of popular storage media. The software recovers data from Ext4, Ext3, Ext2, FAT32, FAT16, and FAT12 file system volumes. It works well with all major distributions of Linux operating system, such as Red Hat, SUSE, Debian, Mandriva, and Fedora.

Booting errors are very common in Linux operating system, which makes your system unbootable and unusable. The errors prevent your system from booting and render it totally inaccessible. They prove to be a big threat to your precious data. Such errors usually occur after unexpected system shutdown and hard drive data structure corruption.

Losing data from hard drive in such situations creates big problems for your business. So, you need to restore data from the latest backup to prevent data loss. However, in case backup is not updated or available, Linux Recovery solutions come to your help.

When you face boot errors, your Linux system refuses to boot properly. There are various types of boot errors, depending upon the type and cause of failure. One such error is SCSI CRC error. You may come across the below error message when your Linux operating system loads:

"Creating Root Device

mounting root filesystem

(scsi:0:0:0:0) CRC error during data-in phase

(scsi:0:0:0:0) CRC error in intermediate CRC packet

scsi: aborting command due to timeout: pid 0, scsi 0, channel 0, id 0, lun 0 read (10)......"

The above error halts Linux boot process, making your hard drive inaccessible. To retrieve lost data in such cases, identify the problem and perform Data Recovery Linux by resolving it.

Cause

On the first appearance, this issue seems to be associated with hardware problems, but this is not the case. You may face this behavior due to any of the below reasons:

* Damaged or missing /boot directory from Linux operating system installation.

* File system error or corruption.

* Missing or corrupted initrd.

/boot directory is a major component of Linux operating system, which contains critical information about booting parameters and process. While initrd is a temporary data structure, which makes preparations before mounting of root file system.

Resolution

Use Rescue CD of Linux operating system to overcome this problem by restoring damaged /boot directory and initrd. When it fails, go for Data Recovery Linux software to retrieve lost data.

The Linux Data Recovery applications are able to scan damaged Linux hard drive and extract all lost data from it. They have read-only conduct on the drive to ensure safe recovery, without modifying original data on the disk.

Stellar Phoenix Linux Data Recovery is the most comprehensive and advanced utility to ensures absolute recovery of lost data. The software works well with all major distributions of Linux operating systems, such as SUSE, Debian, Red Hat, Ubuntu, and Fedora. It recovers data from Ext4, Ext3, Ext2, FAT32, FAT16, and FAT12 file system volumes.

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