Posted on Tuesday, January 11, 2011 at 12:27 AM
Like other computer operating systems, Linux also uses a number of data structures to perform various operations. These data structures include Superblock, root directory. Superblock is one of the most significant data structures, which contains all the basic information, such as file system type, status (either mounted or un-mounted), and size. In some situations, this data structure may get damaged and Linux cannot access data from hard drive. It causes critical data loss situations and requires Linux data recovery to be fixed.
Linux file system manager accesses the Superblock information for maintaining it. All the parameters, like size, defined in the Superblock must match the actual parameters; otherwise you may face critical problems. For example, if the size of is different in Superblock as compared to actual size, then disk is reported as corrupt and you run across critical data loss problem and need to opt for Linux recovery solutions...
Posted on Thursday, August 12, 2010 at 11:30 PM
Are you using a Linux system and are unable to locate some of your files after a power outage? If yes, then there are chances that you may have lost these files due to any random reason. There are few methods in Linux that you can use to recover these files. If these methods do not work, then the taking the services of a professional Linux data recovery tool is called for.
Taking a practical case in which you are working on a Linux system that has ext2 file system. Suddenly, there is a power outage and the system shuts down abruptly. When the power is restored, you switch on the system, only to find that you have lost some of the files.
Cause:
1) There could be the following reasons for such situation:
2) The system could be virus infected that could have caused the data loss.
3) There could be some bugs in the operating system version.
4) It could be possible that the logical drives may be accidentally deleted.
5) The partition table may have got corrupt or damaged...
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 Thursday, July 29, 2010 at 11:52 PM
In the Linux systems, the ext2 (short for second extended file system) file system is used extensively by numerous users. This file system is very efficient when dealing with real large disk partitions. In addition, when the ext2 file system is mounted then all the information that is stored in the disk data structures is copied into the RAM of the system. Because of this, the Linux kernel is able to avoid numerous disk read operations. However, as nothing is perfect in this world the ext2 file system, too, is prone to corruption. In such cases, you should perform in-built methods to remove corruption and mount file system. However, in case you are unable to fix the problem then you should use a third-party Linux data recovery software to perform data recovery for Linux system.
Let us take an example. Consider a scenario wherein you have a Linux system having ext2-based file system. In this, when you try to mount the file system after a power outage you are unable to do so. An error message is displayed, that is:...
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Ext2 Recovery
Posted on Tuesday, July 06, 2010 at 3:04 AM
Linux is one of the most used open-sourced operating systems that has carved its own niche among its faithful users. It is fast, easy-to-use, and reliable. Also, it is part of the LAMP (Linux, Apache, MySQL, PHP) stack that provides a lot of advantages to the developers and users. However, it has one drawback that it does not have a Recycle Bin like Windows systems. So, if a file is deleted you need to perform few tasks to finally recover the deleted file. However, if you are unable to recover the deleted file then you should use a third-party Linux data recovery software to perform Linux recovery.
Consider a scenario wherein you have an ext2-based Linux system. In this, you have accidentally deleted some files. Now, you want to recover the deleted files.
Resolution:
To resolve this situation, you should perform data recovery of Linux system. To do this, you should perform the following steps:...
Posted on Tuesday, June 22, 2010 at 10:52 PM
The ext4 file system in Linux systems is the successor of the ext3 file system. As ext3 was extensively used for quite a long period, the ext4 file system is loaded with lot of new changes to overcome the limitations of ext3 file system. Few important data structures have been added in the ext4 file system to make it provide improved performance, new features, and reliability along with a better design. One such feature is the delayed allocation feature, which does not write any new data as soon as it is entered. Because of this, the processor waits till the time it is really necessary to write the data to the disk as it optimizes the write processes.
However, sometimes the delayed allocation feature results in severe data loss. You should use appropriate methods to resolve the situation. If you are not able to restore the lost data, then you should use a third-party Linux data recovery software to perform ext4 recovery...
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 Wednesday, May 26, 2010 at 11:13 PM
The Ext2 (second extended) file system is an advanced file system for Linux kernel. It is a replacement of Ext file system. It is possible to resize the Ext2 file system, while it is mounted and system is using it. This is possible using the ext2online utility. The process of resizing the file system while applications have open files, and writing data to file system, is OK. However, you should always have a complete and valid backup of your mission critical data before mounting an online or mounted file system. In case anything goes wrong, you may encounter serious data loss situations, which requires Linux data recovery to be fixed.
You can resize only the mounted Ext2 file system. In order to use the ext2online utility, you must have Online ext2 resize support (CONFIG_EXT2_RESIZE) option enabled in your Linux Kernel. You can enable this feature after applying appropriate patch for 2.x kernel series...
Posted on Thursday, May 20, 2010 at 2:30 AM
The ext2 (second extended) is one of the file systems of Linux operating systems. It is used in several Linux distributions and is the first choice for flash-based storage media such as SD cards, pen drives, etc. This is due to lack of its support for journaling, which minimizes the number of writes as the flash-based devices provide limited number of write cycles. Though this file system renders fast performance, it is prone to corruption. Due to this, system drive can become inaccessible thereby raising the chances of you losing the data. The corruption can happen due to various reasons such as virus infections, power outages, human errors, abrupt system shutdown, etc. To overcome such situation, you should use appropriate corrective measures. However, if you are unable to address the issue then you should use a third-party Linux data recovery software to perform Linux recovery.
Consider a scenario wherein you have lost data from your ext2-partitioned Linux system. The possible reasons behind this could be either of the following reasons:...
Posted on Friday, May 14, 2010 at 2:39 AM
The Linux system is an open sourced operating system that is used by people all over the world. Unlike Windows and Apple operating systems, it is not a sole proprietary of a single organization. In fact, over 1,000 developers from at least 100 different companies have contributed to its each update. On a lighter note, it is created by the people, for the people, and of the people a la democracy. The most notable thing about Linux is that it can be used absolutely anywhere, from wristwatches to supercomputers.
However, Linux systems too can get corrupted. Corruption can occur due to various reasons such as human errors, virus infections, abrupt system shutdown, damaged file system, faulty hardware components, etc. To resolve this issue, you should take appropriate corrective measures. However, if you are unable to do so then you should use a third-party
Linux data recovery software to perform data recovery of Linux system...
Posted on Friday, May 07, 2010 at 2:17 AM
The Linux system is an open sourced operating system that is used by people all over the world. Unlike Windows and Apple operating systems, it is not a sole proprietary of a single organization. In fact, over 1,000 developers from at least 100 different companies have contributed to its each update. On a lighter note, it is created by the people, for the people, and of the people a la democracy. The most notable thing about Linux is that it can be used absolutely anywhere, from wristwatches to supercomputers.
However, Linux systems too can get corrupted. Corruption can occur due to various reasons such as human errors, virus infections, abrupt system shutdown, damaged file system, faulty hardware components, etc. To resolve this issue, you should take appropriate corrective measures. However, if you are unable to do so then you should use a third-party Linux data recovery software to perform data recovery of Linux system.
Consider a scenario wherein you are not able to boot your Linux-based system having ext2 file system...
Posted on Thursday, April 29, 2010 at 11:29 PM
The ext3 (third extended file system) is a file system used by Linux kernel. It is a journaled file system, which is a default file system for many Linux distributions. Its major advantage over the ext2 file system, its predecessor, is journaling that improves the reliability of the file system. It also minimizes the need to check the file system after an abrupt shutdown. Also, because of journaling there are no fragments in the file system. So, ext3 is a very efficient and smart file system. However, there is a chink in its armoury.
The files that you delete are deleted permanently. This file system does not support recovery for files that have been deleted accidentally. But, you can recover the deleted files using appropriate method in ext3 file system. However, if you are unable to recover the deleted files then you should use a third-party Linux data recovery tool for
ext3 recovery...
Posted on Wednesday, April 21, 2010 at 12:37 AM
Ext2 (second extended) file system is a file system designed to be used in Linux kernel. It facilitates high-level security, reliability, and data management options to the system. Although, it is a highly secure system, it does sometimes get affected by virus infections, which in some cases can delete the files. In such cases, you should try to restore the files by their updated backup if you have one.
The Linux system provides some in-built methods to retrieve deleted files from the system. You should consider using these methods. However, if you are not able to recover the deleted files with these methods, then you should perform Linux Data Recovery of your ext2 system using a third-party
Ext2 Recovery software.
Listed below are some in-built data recovery utilities, that Linux provides:
• E2undel: This utility recovers deleted files from the Linux systems having ext2 file system by interacting with its console...
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Posted on Thursday, January 28, 2010 at 10:51 PM
In Linux operating system, myrescue is an utility to retrieve still-readable information from damaged hard drive. This Linux Data Recovery tool is similar to the dd_rescue, however it attempts to quickly get out of corrupted area to handle undamaged part first. After extracting data from the undamaged area, the utility then returns to the damaged area and tries to fix it.
The myrescue utility attempts to copy your hard drive block-wise to the file and creates a block bitmap (table) remarking whether the block is successfully copied, not handled yet or it has errors. The block bitmap or table can be employed in the successive runs for concentrating on unresolved blocks.
This Data Recovery Linux utility effectively handles the read errors, through its special skip way. General the hard drive surface blemishes cover more than simply one data block and uninterrupted reading data from the defected areas may damage the hard drive surface, the hard drive mechanisms, and read/write heads...
Posted on Wednesday, January 20, 2010 at 4:26 AM
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...
