Posted on Saturday, October 30, 2010 at 3:53 AM
However advanced the technology may be and whatever precautions we may take, data loss is almost inevitable. Though Linux operating system is often improved upon its previous versions than any of its counterparts, still there are a number of reasons, for which data can be lost in a Linux operating system based computer. In a Linux computer, the fstab (/etc/fstab) and mtab (/etc/fstab) are the two most crucial directories. Without these directories, the operating system could not be able to locate neither the existing hard drive volumes nor the mounted drives on your system. For this reason, the system fails to boot and all your data in the hard drive becomes inaccessible. In such situation of data loss, you need any Linux data recovery software to recover back the lost or inaccessible data.
Facts about 'fstab' and 'mtab' directories:...
Posted on Saturday, October 30, 2010 at 2:40 AM
LINUX operating system is popular for its new-age advanced technology and features. Linux facilitates working on the same computer along side Windows. The process of having two different operating systems on a single computer is known as dual boot, where you can have choice to choose either of the listed operating systems at the boot time. Linux is the most widely used complete open source operating system and has the bare minimum compatibility issue with other popular operating systems. However, sometimes, accessing of Linux volumes from Windows can't be possible and error occurs while accessing the same from Linux also. In such cases, you have to look for any
Linux data recovery utility to recover your valuable Linux data back...
Posted on Thursday, October 28, 2010 at 10:02 PM
In the Linux operating system, the fsck is a useful utility that scans the file system for consistency and integrity. It is usually run automatically at the startup if the system detects that it is in an inconsistent state. It checks and repairs the file systems and bad sectors. Although this utility is useful in its own right, it has got some drawbacks as well. For example, if you run fsck on a mounted Linux system then it could lead to system corruption and data loss. In such cases, you should take the help of a effective and reliable
Linux data recovery software.
Consider a scenario wherein you are working on a Linux system that has live Ext3 file system. You run the fsck utility and find the following error message:
“EXT3-fs: corrupt root Inode, run e2fsck”
If you run e2fsck on the same volume after getting the aforementioned error message, then the following error message is displayed:
“Root Inode is not a directory. Clear?”...
Posted on Thursday, October 28, 2010 at 3:29 AM
A Linux-based hard drive can be divided into primary, logical, swap, or foreign partitions. These partitions are assigned a pre-defined space at the time of installation of the Linux operating system. However, as the requirements of the user change with a passage of time, the users increase or decrease the size of these partitions accordingly. To do so, the users either opt for FDISK utility or any third-party application. While the process of re-partitioning allows the user to fulfill all partitioning requirements, it might also result into complete unmount ability of the hard drive, if not performed systematically. In most of these situations, the user encounters an error message that does not allow him/her to access the data saved on any of the hard drive partitions. To overcome such error messages, the user needs to opt for an effective third-party Linux Data Recovery application, if s/he has not maintained any backup...
Posted on Monday, September 20, 2010 at 11:33 PM
The generic boot loader in Linux operating systems is the LiLo (short for LInux LOader). Using LiLo as the boot loader, you can boot the Linux system using any boot device such as hard disk, USB, etc. It is a very useful component that can either be placed in the MBR (Master Boot Record) or in the boot partition of your system. At times, you find that your system is unable to start displaying random error messages. There is quite a possibility that corruption in LiLo is the most prominent reason behind this. In such cases, you should take every suitable step to perform data recovery of Linux system. If none of the methods succeed, then you should use a third-party
Linux data recovery software to do so.
Let us assume a scenario in which you have a Linux system, which is not starting when you do so. The following error message is displayed on the screen:...
Posted on Wednesday, September 08, 2010 at 11:36 PM
Among the tech geeks, LINUX operating system based computers are considered more robust and safe in terms of data security, as the LINUX versions are more often updated with technology changes. Moreover, their frequent upgradation, keeps them comparatively free from virus/ malware intrusion. These are the few points backing the LINUX systems against some of the usual problems and thereby loosing valuable data. However, hard drive of a LINUX based computer, the major physical component that stores the data, can go wrong to take down significant amount of data with it. Such situation demands techniques, such as LINUX recovery or LINUX hard drive recovery to recover back your valuable data from the troubled drive.
Components inside a hard drive & why it fails:...
Posted on Thursday, September 02, 2010 at 11:49 PM
In digital world, every single day, you can witness a new technological advancement, even over the advanced of the things. The 'caching' technique is one of the instances that has been devised to increase the efficiency and speed of the system performance. Through caching, data can be temporarily stored in the virtual memory before it is being written to the disk and can be accessed much faster. Sometimes, in LINUX systems, caching causes severe corruption to the file system and your data in the affected drive becomes missing or inaccessible. These instances of data loss can be countered and the recovery of your valuable data can be done through technologies like LINUX data recovery.
The problem:
While writing to a disk using the Write-back caching technique, the system shuts down followed by a power surge. The situation resulted in severe system error and some data in the drive went missing or inaccessible.
A brief about 'Caching':
...
Posted on Wednesday, August 18, 2010 at 11:55 PM
Being part of this e-age, we must have witnessed data loss every now and then. Though LINUX is not new to us, for its command mode and less user friendlier user interface, users are less comfortable at using it. Furthermore, if there happens any problem leading to data loss, the panic is beyond explanation. LINUX has some inbuilt commands for customizing the recovery of deleted files, still recovery from complex issues of data loss need more sophisticated utility like LINUX data recovery software.
Brief about ext3 file system:
LINUX has many different file systems such as JFS, ReiserFS, XFS, ext2, ext3 etc. Here we are talking about ext3 file system and the recovery options once any file is deleted under this. ext3 or the third extended file system is an extended version of ext2 and is a journaled file system.
What happens when we delete a file in LINUX and recovery options:...
Posted on Sunday, August 15, 2010 at 11:05 PM
Though LINUX is still less used in comparison to Windows, it is known for its advanced andt improved features. Almost everyday, you can witness a modification to improve your LINUX version. With increased number of facilities, safe usage and better programming LINUX is gaining popularity. However, with certain minor incompatibility issues with other leading applications of previous versions, resulting into data loss, may force you to think of something like LINUX recovery.
Scenario:
You have an HP 6930p laptop with karmic 9.0 installed on a 250 GB Western Digital hard disk. Your system shows an error and does not boot further after recent update of the 'update manager'. The situation leads to data inaccessibility and need of a LINUX recovery software arises. The error message that flashed on your screen may read as below:
“no such device : ba123456-7980-abcd-efghijklmnop
Failed to boot default entries
Press any key to continue ”
Cause:...
Posted on Thursday, August 12, 2010 at 11:14 PM
When a Linux system starts up, the system is started with LiLo (LInux LOader), which is a system file. After that the BIOS (Basic Input/Output System) section, after doing some tests, transfers the control to the MBR (Master Boot Record) where the LILO is stored. One big plus of using it is that the booting process becomes real fast especially when stored in the MBR.
At times, the operating system gets corrupt as it also involves modification in the MBR while booting, which may lead to inaccessible system. There are various workarounds to recover and restore your valuable data. If none of them is successful, then the best alternative is to use a third-party
Linux data recovery software.
Let us take an example in which you start your Linux system but it fails to boot properly. The boot process displays 'LIL' on the screen.
Cause:
The reason behind this booting problem is that the descriptor table is damaged...
Posted on Tuesday, August 10, 2010 at 12:01 AM
MBR, the acronym stands for Master Boot Record. It is also known as the partition sector, that is the first 512-byte boot sector of a partitioned hard disk. MBR holds the primary partition table of the hard disk and your LINUX system boots only after the BIOS passes the execution of the machine code inside the MBR. Hence, any problem with the MBR directly affects the booting process of the hard disk, making it inaccessible and the situation demands Linux recovery techniques to bring back your valuable data.
The Master Boot Record is not reside in partition of the hard disk, it is there in the main boot boot record, ahead of the first partition. If a hard disk has been partitioned with the MBR partition table scheme, the MBR contains the primary partition entries in its partition table that is all the information required by the OS to boot up. Where, the first sector stores this, the last end sector stores the information about the bootable partition...
Posted on Thursday, August 05, 2010 at 11:10 PM
The partition is considered as a piece of logical division of the disk space, which runs on some operating system. Partition table is located at the first sector (cylinder 0, head 0 and sector 1, MBR) of each hard disk and It memorizes the information about sizes and locations of partitions. Hence, any corruption to the partition table, may lead to serious data loss or inaccessibility, demanding LINUX recovery technology to get back your valuable data.
Scenario:
You started your LINUX system and suddenly your system halted with an error message popping up. All your data in the hard drive becomes inaccessible and you are getting the same error message, every time you boot your PC. The situation has left you with no other option except something like LINUX data recovery to get your data back. The error message flashing on your screen may read as follows:
“The partition table on device <drive_name> was unreadable”
Cause:...
Posted on Wednesday, July 28, 2010 at 11:42 PM
GNU GRUB or the GRand Unified Bootloader is a boot loader package from GNU with the implementation of multi boot specification. This enables an user to install multiple operating system in a single computer and choose the one, which is to be run when the computer starts.
GRUB facilitates a rich set of terminal commands that allow a user to view the hard disk partition details, alter partition settings, temporarily re-map the disk order, boot any user-defined configuration file and view the configuration of other boot loaders in GRUB supported file formats. Generally, GRUB errors indicate that the hard drive is suffering from errors and in those cases, if updated backup is not available, LINUX data recovery is the only safe option to get your valuable data back.
Taking a real life instance in account, while trying to boot, your LINUX base system gave an error and the data saved become inaccessible. The error may read as follows:
Error:
“GRUB Error 17 : Cannot mount selected partition” -...
Posted on Thursday, June 17, 2010 at 2:36 AM
You can effectively manage your valuable data on Linux hard drive by dividing it into various logical disks, known as volumes. Every hard drive volume works as a different hard drive and can be used to store various kinds of data. Every volume has a file system, which can be Ext4, Ext3, Ext2, or any other Linux-supported file system. The volumes are managed in partition table, which is stored the first sector of hard drive. In case the structure or file system of a Linux volume gets damaged, it becomes totally inaccessible and you come across severe data loss. In order to get your mission-critical data recovered in such situations, Linux data recovery becomes need of hour.
Linux operating system requires at least one hard drive volume for the root file system. The swap partitions and/or swap files can be used by it, but latter are more effective. Thus, generally the user wants a dedicated swap partition. BIOS (Basic Input/Output System) can generally access only first 1024 hard drive cylinders on Intel hardware. Due to the same, various users with large hard drives generally create third volume, which has small size of few MB...
Posted on Tuesday, June 08, 2010 at 10:26 PM
A Linux file system is a collection of various files and folders, which is stored in a separate disk partition. The entire disk partition is divided into various file system blocks, which are used for storing either the user data or the metadata. The metadata can be referred as the repository that contains the information of the file system. One such metadata structure is the superblock, which is very essential for the health of the Linux system.
A file system cannot be mounted if you are not able to access the superblock. This case arises if the superblock is corrupted that can happen because of various reasons such as virus infections, power outages, file system corruption, human errors, etc. In such cases, you should take appropriate corrective measures to recover the file system. If you are not able to resolve the issue, then you should use a third-party Linux data recovery software to perform data recovery of Linux system...
Posted on Tuesday, June 08, 2010 at 3:08 AM
There are various techniques available in order to safeguard your valuable data, and disk mirroring is the most popular among them. It is the process of create an exact replica of all the data stored on your hard drive. You can easily convert your basic hard drive volumes to mirrored volumes, which replicates your data to prevent any sort of data loss situations. On Linux operating system-based computer, you can convert your linear logical hard drive volume to the mirror logical volume using 'lvconvert' utility. However, you should play safely while converting a Linux volume, as interruption to the process may cause hard drive failure and data loss situations. At this point of time, you need to opt for Linux data recovery solutions to get your precious data back.
The lvconvert is an inbuilt utility of Linux operating system that enables you to change a linear Linux hard drive volume to mirror logical volume. You can also use this utility to remove or add disk logs from the mirror devices. The command line utility supports various options or parameters to perform specific task. Some of the most common parameters of this utility are as given below:...
Posted on Saturday, May 29, 2010 at 12:18 AM
The journaled ext3 system is an extremely powerful file system and makes the data very organized as opposed to its predecessor, ext2 file system. It is so because the file system remains consistent even after a system crash or unexpected power failure. You do not need to perform lengthy checks after switching on the Linux system. Also, there is minimal chances of data fragmentation in the disk. However, in the ext3 file system there is a catch. When you delete a file, there is no prompt to delete the file. It is not even transferred to a trash bin like Windows. So, a lot of times the Linux users complain of accidental data loss. In such cases, you should use appropriate measures to recover the lost data. However, if you are not able to do so then you should use a third-party Linux data recovery software to perform ext3 recovery...
Posted on Monday, May 24, 2010 at 11:29 PM
A Linux based computer system becomes unbootable in case its file system gets corrupted or damaged. In most of these situations, a Linux user encounters an error message that does not allow him/her to access the data saved on the Linux hard drive. Few main causes for corruption in file system (either EXT4, EXT3, or EXT2) can be improper system shutdown, inode corruption, superblock damage, virus infection, accidental system shutdown, and operating system malfunction.
To overcome such situations, the user needs to repair the damaged file system using 'e2fsck' command. This command checks and repairs the corrupted files system in almost all cases. However, the command does not ensure 100% repair in all file system corruption scenarios. For cases where the above command fails, the user needs to reinstall Linux operating system and then restore data from an updated backup. But, in the absence of a valid backup, you will need to opt for a commercial Linux Recovery application...
Posted on Monday, May 24, 2010 at 12:20 AM
LVM (Logical Volume Manager) is a part of Linux operating system kernel, which manages hard drives and other mass storage devices. It is a way of allocating disk space into various volumes, which can easily be resized or extended instead of hard drive partitions. You can not place Linux /boot/ partition on logical volume group as it is not readable by the Linux boot loader.
You can easily extend a logical volume, using lvextend utility. It also supports extension of the snapshot logical volumes. Before you proceed for extending a Linux volume, you must first create an absolute backup of entire volume. In case the logical volume extending process gets interrupted or halted, you may lose access to logical volumes and encounter data loss. At this point, you have to opt for Linux data recovery software to get your valuable data back.
The lvextend command-line utility, offers you the following options to perform a series of operations on your logical volume-...
