Technology And Computer|

Are you Linux OS users? And you are suffering from data loss due to Linux hard drive crashing and other corruptions showing like:

1-    Linux based OS dose not boot up on your computer or laptop.

2-    If your system showing various error messages, like “No Fixed Disk Present”"DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER”

3-    If power up and system show Black Screen.

4-    System reboots, freezes, or stops responding frequently.

5-    “Operating system not found” and “Drive not formatted” messages.

6-    Boot sector virus or damaged MBR (Master Boot Record).

7-    Corrupted or damaged file system of Linux hard drive.

8-    Missing or damaged system files or operating system.

9-    Virus attack.

10-  Corrupt Superblock or other critical meta data structures.

All the above reasons affect linux OS based system or linux based hard drive. And you have completely hopeless than you have to think now how to recover Linux file and data? Then you come to right place because..

Recover data for Linux data recovery software provides great solutions for Linux users. This software performs complete and effective Data Recovery Linux in all cases of data loss. They come equipped with interactive and simple graphical user interface to ensure easy recovery in all data loss circumstances. With read-only and non-destructive conduct, the software is totally safe to use.

Linux Data Recovery software recovers lost, deleted, missing files from all types of storage devices. It can be used with all major distributions of Linux operating systems, with SUSE, Debian, Red Hat, Fedora, and more. The software supports recovery from Ext4, Ext3, Ext2, file system volumes. This tool is compatible with Windows 7, Vista, Server 2003, XP, and 2000.

Features of Linux Data Recovery Software – Recover Linux Data
Supports Ext2, Ext3 File System & Provides Linux Data Recovery
Partially supports LVM Partitions, Provides LVM Recovery
Recovery of Volume with damaged Super and Inode Block.
Provides you to update the software.
Provides you with the option of File Filters.
Supports ReiserFS File System
Recovery of Volume with damaged Super and Leaf Block.
Supports JFS File System

Check out brief explanations from http://www.linuxdiskrecovery.com/ and download the free version of Recover Data for Linux Data recovery tool.

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All the data files that are accessible in Linux based computers are placed in a big tree, called root directory and denoted as ‘/’, in an organized form. These data files might be spread out over various devices. The mount command in Linux operating system allows you to attach a file system on a data storage media to the root directory. However, if the file system is faulty and you run fsck utility to fix the problem after mounting the disk using this command, severe file system corruption occurs. It causes critical data loss situations and calls for Linux data recovery.

The mount command tells the Linux kernel to attach the file system found on your hard drive volume in the /dir directory. The previous owner, mode, and contents of the directory become invisible after mounting, and as long as the file system stays mounted, the /dir pathname refers to the root of file system on Linux hard drive volume.

The following three types of invocations of mount command don’t actually mount the volume:

·     mount -h- It prints the help message on screen.

·     mount -V- This invocation prints the version string.

·     Mount [-l] [-t type]- The option lists all the mounted file systems that are of type “type” on your Linux hard drive. The -l option adds labels (like ext2, ext3) in the listing.

In current versions of Linux operating system, it is possible to mark the mount and submounts as private, shared, unbindable, or slave. The shared mount gives you an option to create mirrors of the mount.

Mount is an essential process for accessing data from any Linux hard drive volume. If the drive is not mountable, it cannot be accessed. Sometimes, when you try to mount a Linux volume, you come across the following error message that puts you in need of data recovery Linux:

“Wrong fs type, bad option, bad superblock on /dev/hda8, missing codepage or helper program, or other error. In some cases useful info is found in syslog – try dmesg | tail or so”

This problem is caused by dirty or corrupt file system. In such cases, you need to use Linux recovery software to get your mission-critical data back. The Linux data recovery applications enable you to thoroughly scan the affected Linux hard drive using advanced scanning algorithms.

Stellar Phoenix Linux Data Recovery is the best solution to ensure absolute recovery in all Linux data loss situations. The software recovers lost Linux data from Ext4, Ext3, Ext2, FAT32, FAT16, and FAT12 file system volumes. It works well with all major distributions of Linux operating system, including SUSE, Mandriva, Red Hat, Debian, and Ubuntu.

In Linux or any other UNIX-based operating system, the home directory is special file system directory that stores personal data of a particular user. Only the given user has authorization to access home directory.

Using home directory, you can separate the user data from system data. It avoids the redundancy of data and makes the backup process relatively simple. It also makes your data secure from the viruses and other malicious programs in other directories.

In Linux computer, user’s home directory holds all the documents, files, graphics and personal data. The user could also keep added software that might not have installed on system as a whole.

The home directory can be organized with the help of sub-folders, at user’s preference. The data stored in home directory is confidential and if user wants, it could be shared with other users.

In this way, you can see the importance of home directory. But sometimes when you log into your home directory, you may encounter the error messages like:

“Shell-Init: Permission Denied”

Or

“end_request: I/O error”

After these error messages, you can not enter into the home directory and could not access data from it. This behavior might occur due to missing or corrupted system files, directory structure, metadata structure and similar reasons.

No matter what the cause of this problem is, the ultimate result would be the inaccessibility and loss of your valuable data. To get your data back in such cases, you need to perform Linux Data Recovery.

You can have easy and automated Linux Data Recovery using  data recovery Linux software. These software works by thorough scanning of hard drive, locating your data and finally recovering it.

Stellar Phoenix  Linux Data Recovery software is the most excellent solution for all your Linux Recovery needs. This robust Linux Data Recovery software uses influential scanning mechanisms to retrieve your lost data from Ext2, Ext3 and ReiserFS file system based Linux drives. It supports Linux Data Recovery from most of the Linux flavors.

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Linux supports file systems like Ext2, Ext3, ReiserFS etc. They follow hierarchical directory structure, where everything starts from a root directory that is represented by ‘/’. The root directory then expands into sub-directories. As compared to Ext2 file system, Ext3 and ReiserFS are less prone to corruption. It is because they both support file system journaling and can replay journal to recover from unexpected crashes. But in cases of severe corruption, you need to use tools like fsck to repair the file system or ultimately format the partition or volume. To restore the lost data, you need to use an updated and valid data backup. But, if data backup itself gives errors or proves incomplete to deliver the required information, Linux Data Recovery tools can come to the rescue to recover your lost data.

Consider a scenario, you try to start a Linux system and receive a set of error messages as:

“Multiply claimed block”

The boot process fails with this error message and you can’t access the data.

Cause

When your system starts and it doesn’t find the file system in good state, it runs fsck check. This error message is returned by fsck check, when it finds the file system inconsistencies. File system can get corrupt because of unexpected shutdown, virus infection, network errors, hardware issues and other similar reasons.

Solution

To solve the ‘Multiply claimed block’ error, you need to follow these steps:

You need to manually run the fsck command. It can repair file system consistencies like the ones that occur when file system is unmounted or mounted as read-only.

If running fsck doesn’t resolve the issue, you need to reformat the hard disk and reinstall the operating system. This process recreates complete file system structure and also deletes all the data. In such cases, you need to use the recent data backup in order to restore the lost data. But in some cases, data backup can be corrupt or incomplete. To recover data during such circumstances, you can use commercial Data Recovery Linux applications.

Linux  Recovery software are advanced applications that use advanced scanning procedures to safely recover your lost or inaccessible data. Such software are available with interactive interface together with developed features to assist you.

Stellar Phoenix Linux Data Recovery offers powerful Data Recovery Linux solutions. It supports Ext2, Ext3 and ReiserFS file systems based Linux partitions and volumes. The software can be used with almost all Linux distributions as SlackWare, TurboLinux, SUSE, Mandrake etc. It gets installed on Windows (Windows Vista, XP, 2003 and 2000) and the affected Linux hard drive should be connected as slave.

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Superblock is the most significant component of a Linux volume that restrains critical information about files and folders in file systems as ext2, ext3 and more. It enables us to mount and access the file systems. Superblock corruption primarily occurs due to metadata structure damage, file system corruption, unexpected system shutdown, malicious software like virus and more.

In most cases of superblock corruption, the volume becomes unmountable and the data becomes inaccessible. In such situations, you can restore the lost data using an updated backup. However, if you have not maintained any backup or it is not up-to-date, then you need to recover your data by using advanced Linux Data Recovery tools.

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

“Wrong fs type, bad option, bad superblock on /dev/hda8, missing codepage or helper program, or other error. In some cases useful info is found in syslog – try dmesg | tail or so”

After running dmesg tail, you encounter the below error message:

“Couldn’t mount because of unsupported optional features (2000200)”

After the above error message appears, the system becomes unmountable and data stored on the hard drive volume becomes inaccessible. Additionally, you encounter the same error message each time you attempt to boot your system.

Cause:

The main reason behind occurrence of the above error message is superblock corruption.

Resolution:

To resolve the problem and access all inaccessible data, you need to follow these steps:

1. Boot your system by using an alternate block by running the below command:

e2fsck -b 98304 /dev/hdb8

2. Once the file system gets restored to the point at which it can be mounted, you need to fix it by using this command:

e2fsck -c /dev/hda8

-c parameter checks for the bad blocks

However, if the above steps are not able to resolve the issue, you should consider reinstalling Linux. A clean Linux reinstall will erase all existing data from the selected volume. For complete recovery of lost data, you should use efficient Linux Data Recovery software.

Such Linux Recovery tools incorporate effective scanning algorithms to recover all your lost data. These recovery tools provide highly graphical user interface that makes them easily understandable without prior technical knowledge. These tools recover data post situations like superblock corruption, group descriptor faults, inode table damage and more.

Stellar Phoenix Linux Data Recovery is the foremost Linux Recovery tool. It supports recovery from Ext2, Ext3 and ReiserFS file system based Linux volumes. This Data Recovery Linux tool gets installed on Windows (Vista, XP, 2003 and 2000) and the affected Linux drive is connected as slave.

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Mac OS is the most efficient and competent OS now a days. This operating system has several added features along with the features of the earlier operating systems of this series. Although Leopard is more powerful and full features operating system from Apple, but it has a huge bug. In this operating system when you move a file from one volume to or from another volume.

Once you try to move operating for a particular file or folder and while you choose to cancel the operation, it deletes the original file without making any copy of the file. When you move a file to or from different volumes, a new reference of that file in created on the file system of other volume and data is read from the source of the original file, and written to the specified destination.

If you will see that the moving operation completes successfully, the original file is deleted and when you cancel it, it should display a message “Moving Failed” without deleting the original file but leopard deletes the file in both cases. This problem occurs because the finder of the operating system fails to ensure that the file has been written successfully to the destination before deleting the original file.

This bug can lead to the big problem of data loss in Mac operating system. In these situations, you can’t find the data on both original and target location and you can lose them. In these conditions of data loss, you need for data recovery solutions to recover these lost data from Mac operating system. You can use data recovery software known as Mac Data Recovery to recovery your lost data.

Macintosh data recovery software are specially designed data recovery software tools that can help you in recovering your data in all possible cases of data loss. These Mac Recovery software use advanced searching algorithms to search and locate the lost data from Mac volumes and restore them in their original format on their original location.

Are you unable to mount your Linux hard drive volume? Are you facing superblock, inode, or file system corruption like error messages while booting your Linux system? Such situations are caused by corruption of Linux hard drive metadata structures. This behavior of Linux operating system renders all your significant data inaccessible and leads to significant data loss. In order to get your mission-critical data recovered, you should opt for Linux Data Recovery solutions through reliable tools.

In a practical scenario, you may encounter the below error messages after copying your data through ddrescue command-line tool and running e2fsck utility:

“Superblock has a bad ext3 journal (inode 8).
Clear? Yes”

Or

“/dev/sdf was not cleanly unmounted, check forced.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Missing ‘..’ in directory inode 1785876.
Fix? Yes

Pass 3: Checking directory connectivity
Root inode is not a directory; aborting.
e2fsck: aborted
fsck.ext2 /dev/sdf failed (status 0×8). Run manually.”

After the above error message, you can not access your precious data from the hard drive. In order to get your lost data back, and to sort out these errors, you should perform Data Recovery Linux.

Resolution

The problem is caused by bad block at the starting of inode table. You can fix the problem by reconstructing root inode. It is quite easy to reconstruct the root inode, however the problem is that root inode needs to be placed at fixed location and currently a bad block is located there.

Forcing the hard drive to use spare block from its pool is possible, however a bad block is often an indicator of the beginning of hard drive crash. Thus, replacing the affected hard drive with new one is the safest way to recover from this situation. Use ‘dd’ command to copy data from old hard drive to new one. Then run e2fsck to create a new root directory on the new hard drive, and shift all the inodes, respectively.

If the above method does not solve your problem, Linux Recovery applications perform absolute recovery. They use high-end scanning techniques to methodically scan the entire hard drive and get all your precious data recovered. The Linux Data Recovery software come equipped with simple and rich graphical user interface to enable easy recovery.

Stellar Phoenix Linux Data Recovery is the most effective solution for all logical data loss scenarios. The software recovers Ext4, Ext3, Ext2, FAT12, FAT16, and FAT32 file system volumes. It is compatible with all major distributions of Linux operating system such as Red Hat, Debian, Fedora, SUSE, and Ubuntu.

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