Tag: Linux Recovery Software

How to Fix Unable to resolve UUID Error in Linux

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Modern distributions of Linux operating systems use UUID (Universally Unique Identifier) to uniquely identify hard drive or other data storage devices, in place of the conventional block names like /dev/sdb and /dev/hda1. It is due to the fact that UUID is never modified, even if the hard drive is switched. It is stable as compared to traditional methods, and prevents system failure and need of Linux Data Recovery solutions.

UUID is a 128-bit string that is used for making the Linux hard disk management simple. If you look at /etc/fstab file in your Linux computer, you find the entry in the following format, in place of the familiar hard drive designation:

UUID=62fa5eac-3df4-448d-a576-916dd5b432f2

In comparison to the traditional hard drive identification techniques, UUID is quite easy and reliable. For instance, in the traditional Linux systems, when you try to insert a new hard drive in a system that already has two hard drives, the drive is inserted between existing drives. At this point, ‘mount’ command attempts to mount the newly inserted drives as home.

In such situation, you need to log on as a single user for resolving the problem. However, when you log on, it gives you some error message and in the worst case scenario, you may encounter kernel panic. You can fix this issue using UUID.

UUID creates a unique entry for each hard disk volume in the Linux file system tree. Using UUID offers easy management of your Linux hard disks and creates less complication while adding or removing the disk.

Although, UUID is quite useful and it provides various advanced features, but it also has some faults. Sometimes, you may encounter the below error message when you attempt to access a UUID based Linux hard drive:

-Fsck 1.40.8 (13-Mar-200 fsck.ext3: Unable to resolve ‘UUID=d8533154-cef1-4cce-a823-9f3f74aab65b’-

After the above error message, you can not access the particular hard drive. All the data stored on your hard drive become inaccessible and you come across critical data loss. At this point, Linux Recovery Software come for your rescue.

The applications perform absolute Data recovery linux in most of the logical data loss situations, using advanced scanning algorithms. These tools enable you to perform Linux Recovery on your own as they have self-descriptive and simple graphical user interface. With read-only and non-destructive behavior, the applications are completely safe to use.

Stellar Phoenix Linux Data Recovery is the most comprehensive application for perfect recovery of all lost data. The software is compatible with all Linux distributions including SUSE, Debian, Red Hat, and Fedora. It recovers lost data from Ext4, Ext3, Ext2, FAT32, FAT16, and FAT12 file system volumes.

Linux Recovery Software to Recover Back Your Data for Any Instance of Hard Drive Crash

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Are you annoyed by the crashing of your Linux system regularly? The reason can be anything, including the infection of a deadly virus/malware, operating system malfunction, corruption/missing of data structure of your hard drive etc. Apart from these, there can be a number of reasons for which your Linux hard drive crashes almost every time, you boot the system leaving all your valuable data inaccessible. However, you need not have to ponder on how to recover back your lost/inaccessible data, just try any good Linux data recovery software and it can recover all your data for you safely.

You may encounter the below symptoms while encountering the crash of your Linux hard drive:

.Your Linux system fails to boot-up. .You are receiving a blank or a dark screen when trying to boot your Linux system. .The system is exceptionally slow and is taking a much longer boot time. .You are frequently encountering the rebooting of your Linux system and hangs frequently. .Getting an error message, such as: “No Fixed Disk Present” or “DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER”. .On start-up receiving error message, such as: “Operating system not found” or “Drive not formatted”. .There can be a number of possible causes, for which you are encountering the above mentioned situations of data loss or inaccessibility from your LINUX system. To name a few, below are some serious and complex causes behind hard drive crash: .Corrupted or damaged Master Boot record(MBR). .Deletion or missing of necessary system files. .Corruption to the superblock of the hard drive. .Corruption to the file system of the Linux hard drive. .Deadly boot sector virus or malware infection. .In all the above data loss situations, first of all, you can try repairing your operating system by running the operating system CD. However, if you do not get any positive result out of it, try the ‘fsck’ command-line utility, which is meant to locate any file system based errors and fix them.

In case, you are still unable to resolve the issue, you have to format the hard-drive and make a fresh installation of the operating system. As formatting will erase all the data from the Linux hard drive, you have to restore them from a valid backup. If backup is unavailable, you have to use any Linux drive recovery utility to bring the lost/formatted data.

Resolving mount wrong fs type Error in Ext4 Linux File System

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Ext4 or Fourth Extended file system is the latest release in long line of the Linux file system. It is the successor of Ext3 file system and has a number of powerful features. These features improve stability, integrity, consistency, performs, and security of your system. However, in some cases, your Ext4 file system volumes main become unmountable or inaccessible due to file system corruption. Such situations cause data loss and need Linux Data Recovery to be sorted out.

In a practical scenario, you may encounter hard system hangs, while working on your Linux computer. The system may stop responding due to the graphics driver (open source Radeon). At the same time, you can not mount your Ext4 file system volume and the file system seems to be damaged. When you try to mount the Linux volume, you encounter below error message:

-mount: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program, or other error In some cases useful info is found in syslog – try dmesg

tail or so-

When you try dmesg, it gives you further error message:

-EXT4-fs: ext4_check_descriptors: Block bitmap for group 0 not in group (block 727012683)! EXT4-fs: group descriptors corrupted!-

At this point, when you run fsck utility to perform Data recovery linux by fixing the issue, you encounter a long error that may include messages like:

-Inode table for group 0 is not in group. (block 1236188664) WARNING: SEVERE DATA LOSS POSSIBLE. Relocate? No

Inode table for group 1 is not in group. (block 600148394) WARNING: SEVERE DATA LOSS POSSIBLE. Relocate? no-

As stated in the above error message, you may encounter critical data loss situations if you relocate the Inode table. Backup proves a great help in such circumstances. However, if the backup is not updated, corrupted, or not available at all, Linux Recovery Software come for your rescue.

These are powerful and effective third-party applications, which carry out in-depth scan of the entire hard drive using advanced scanning algorithms and extract all lost data from it. These Ext4 Recovery software works in most of the logical data loss situations and safely recovers all types of lost data. With simple and self-descriptive user interface, the applications are completely easy to use.

Interrupted Process of GParted Cause Superblock Corruption and Data Loss in Linux

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In Linux operating system, GPT (GParted) is a useful tool that facilitates you to create, resize, move, delete, copy and check the hard drive partitions/volumes. It also copy file system on newly created partitions. It is helpful to create space to install new operating system, copying data stored on hard drive, mirroring one volume with another and recognizing disk usage. In some cases, using this tool may become problematic. It might damaged Linux superblock and lead to critical situations of system inaccessibility and possibly data loss. At this point, you are required to opt for Linux Data Recovery to get your precious and business-critical data back.

Sometimes, when the disk resizing, copying or any other GParted process is running, few read/write errors might terminate the phenomenon. Subsequent to this serious incident, your hard drive volumes could not mount and you come across a number of error message. In such circumstances, when you run the fsck utility after rebooting the system to check integrity and consistency of file system and hard drive, conditions could remain same. Situation becomes critical on every attempt to fix this issue. Linux operating system superblock may get damaged and give you that indication through following error message:

“superblock corrupted, run with -b 32768”

Superblock is a metadata structure of Linux operating system that keeps record of all file system characteristics such as size, block size, empty and filled blocks, respective counts, location and size of Inode tables, size of block groups, disk block map and the disk usage information. When it gets damaged, you can not access data from your hard drive and Data Recovery Linux is required.

Linux file system keeps redundant copies of the superblock. You can correct the problem by using any of them. You can search and use an alternative superblock with the help of ‘mkfs -n’ command.

If the above method can not help you to sort out the issue, Linux Recovery is the way to go for successful retrieval of your valuable data. Recovery is potential through advanced third-party applications, known as Linux Recovery Software.

The tools powerful and efficient scanning mechanisms to methodically scan whole hard drive and extract all of the lost, missing or inaccessible data from it. With read-only conduct and rich graphical user interface, the software are pretty safe and easy to use.

Stellar Phoenix Linux Data Recovery is an advanced and robust application for assured recovery in all data loss situations. The software recovers data from Ext4, Ext3, Ext2, FAT32, FAT16 and FAT12 file system partitions. It works well with most major distributions of Linux including Debian, SUSE, Red Hat, Fedora and Mandriva.

Manika Batta a student of Mass Communication doing research on Linux data recovery software. He is also a freelancer for http://www.data-recovery-linux.com/

Converting Linux File System From Ext3 To Ext4

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The Ext4 (Fourth Extended File System) is an advanced and effective journaling file system that is developed as successor of Ext3 file system. It provides high performance and removes 64-bit storage limits of earlier file systems. The file system supports backward compatibility with the Ext3 and Ext2 file systems. Thus it is possible to mount Ext2 and Ext3 file system as Ext4. To gain benefit of these advanced features, you need to migrate file system from Ext3 to Ext4. Before migrating the file system, you should create full backup of your data as failure of this process may lead to data loss and require Linux Data Recovery to be sorted out.

Converting a non-root file system

If you are converting Ext3 file system, which can be unmounted, this is quite simple process. Follow underwritten steps for conversion:

Unmount the volume.
Run file system check using fsck.ext3 command to make sure that it is in sane situation.
Enable new features of Ext4 on file system using tune2fs command.
Run fsck.ext4 command. It will find errors that are usual. Let the command fix them.
Edit /etc/fstab file to make it Ext4 in place of Ext3 file system for /home.
Mount your new file system.

Converting root file system

Converting the root file system is quite tricky as you won’t be able to unmount it because your computer is running on it. Go through below steps to convert your root file system:
First thing is to change /etc/fstab file as Ext4 in place of Ext3 for root volume.
Remount the root file system as read-only.
Check your file system using fsck.ext3 command. It will then restart your system.
Enable all Ext4 features on root file system.
Check your root file system for errors using fsck.ext4 command.

Though, it is a good idea to convert your file system from Ext3 to Ext4, but in case if the process fails and you do not have complete backup of your valuable data, you might encounter serious data loss and need to carry out Data Recovery Linux.

Recovery is best possible using third party Linux Recovery Software. The applications recovers your data in most of the data loss situations, without demanding sound and prior technical skills from you. With read-only and non-destructive conduct, Linux Data Recovery software are absolute safe to use.

Stellar Phoenix Linux Data Recovery is the most efficient solution to handle all types of data loss situations on your Linux system. It supports recovery from Ext4, Ext3, Ext2 and ReiserFS file system volumes. The software is compatible with all major distributions of Linux including Debian, RedHat, Fedora and Ubuntu.