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.

Consider a scenario wherein you have an ext3-partitioned Linux system. When you try to access the  partition, you are not able to do so. An error message is displayed, that is:

“/dev/sda2: Input/output error

mount: /dev/sda2: can’t read superblock”

Cause:

The cause of this error message is that the superblock has corrupted because of the aforementioned reasons.

Resolution:

You can restore the primary superblock from the various backup copies that the Linux system maintains for such situations. To do this, you need to perform the following steps:

Find out superblock location for /dev/sda2

Check and repair the Linux file system using alternate superblock # xyz, where xyz is the location of the alternate superblock.

Mount file system using mount command viz, # mount /dev/sda2 /mnt

Try to browse and access the file system.

However, if you still are unable to address the situation, then you should use a third-party Linux data recovery software to perform Linux recovery. Such tools are read-only in nature and perform Ext3 Recovery without overwriting the original data.

Stellar Phoenix Linux Data Recovery software is a Data Recovery for Linux software that enables you to perform Linux data recovery for various file system volumes. Apart from ext3 recovery, it is capable of performing ext2 recovery and ext4 recovery. In addition, this Linux recovery tool recovers data from various types of hard drives such as SCSI, SATA, EIDE, and IDE. It supports different Linux distributions such as Red Hat, SUSE, Debian, Caldera, Mandrake, Sorcerer, TurboLinux, Slackware, Gentoo, etc. It is compatible with Windows 7, Vista, Server 2003, XP, and Server 2000.

SUSE LINUX 10.1 Consignment Strong Encryption English

If you are a Linux user, then you must have used a utility, known as Boot Loader. It provides different levers of functionality and support, through its different variations. Along with the boot operations, Linux boot loader also handles errors and helps you keep your system functional. Boot loader generally handles boot and memory errors at start up. However, in some cases, the boot loader can not fix the errors, which makes your system unbootable and unusable. In such circumstances, you can not access the data stored on your Linux hard drive and eventually face data loss. In order to extract lost data from the Linux hard drive in such situations, you need to opt for linux data recovery solutions.

Two most popular boot loaders of Linux operating system are:

LILO (Linux Loader)- It comes as default boot loader of all Linux distributions. As one among the oldest boot loaders, its strong Linux community accompaniment has enabled LILO to develop over time and remain useful as an operational modern boot loader. Some novel functionalities, such as exploitation of newer BIOS (Basic Input/Output System) functions and improved user interface, make this boot loader more stable and reliable.

GNU GRUB (Grand Unified Boot Loader)- It is considered as a replacement of LILO. It is based on original GRUB program and developed by Free Software Foundation. GRUB is reference implementation of Multi boot Specification that enables you to have various operating systems on same computer and select which one to use for booting.

Both these boot loaders allow Error Handling for proper functioning of your Linux computer.

Error Handling:

It denotes anticipation, detection, and finally, resolution of the operating system or application errors. The Linux boot loaders forestall most of such errors, recover your system from them when the errors occur, without affecting the system operations.

Although, boot loader error handling is a useful process, but if the critical errors can not be handled by Linux boot loaders, your system may become unstable. Such situations may cause data loss and require data recovery linux to be fixed.

Linux Data Recovery is possible using powerful and advanced linux recovery software. They are particularly designed to thoroughly scan whole Linux hard drive and extract all lost, missing, and inaccessible data. The applications are capable of handling virtually every type of logical data loss situations and enabling safe and easy recovery.

Stellar Phoenix Linux Data Recovery software recovers lost, missing, and inaccessible data quickly and successfully. It supports all major distributions of Linux operating system, such as Red Hat, SUSE, Ubuntu, Fedora, Mandriva, and Debian. The software recovers lost Linux data from Ext4, Ext3, Ext2, FAT32, FAT16, and FAT12 file system volumes.

Are you facing “Read-only file system” error while booting your Linux computer? Does your system refuse to boot up in dual-boot configuration with Microsoft Windows operating system? When you encounter this behavior, system can not boot up and your data becomes inaccessible. At the same time, system may stop responding and you need to perform hard reboot. This overall behavior leads to significant data loss on your Linux system and need Linux Data Recovery to be sorted out.

In order to try fixing this issue on your Linux computer, identify the root cause of this problem. You may come across such circumstances due to any of the below reasons:

Damaged or corrupted file system

Improper unlock addresses for the LPC (Low Pin Count) flash chip

Hard drive failure

Linux automatically re-mounts the file system as read-only, if a hard drive failure takes place. In order to detect the affected system component and fix it, go through the underwritten steps:

To check error, integrity, and consistency of file system, unmount it first. If you can not unmount the file system, being root file system, force file system check at next reboot. If you find that file system is corrupted, hard drive formatting is required to rebuild or replace the damaged file system.

Run fsck command-line utility on the affected Linux hard drive. It is an in-built tool of Linux operating system, which lets you repair a number of issues with inode structure, data blocks, directory structures and more.

If hard drive failure is the problem, format hard drive, reinstall operating system, and restore data from the most recent backup.

Formatting is the process of creating a new copy of all the hard drive data structures, including file system. It removes every type of errors from the hard drive and make it as a new drive, deleting all the data, applications, and even operating system from it.

This process causes severe data loss, if the backup is not in place. In such conditions, Linux Recovery come for your rescue. You can carry out safe, quick, and easy Data Recovery Linux through third-party recovery applications.

Such tools are known as Linux Recovery Software. They use advanced scanning techniques to perform thorough scan of data loss affected hard drive and carry out absolute recovery in most of the logical data loss situations.

Stellar Phoenix Linux Data Recovery is the most effective and powerful application to retrieve lost Linux data. It recovers data from Ext4, Ext3, Ext2, FAT12, FAT16, and FAT32 file system volumes. The software works well with all major distributions of Linux operating system, including Red Hat, SUSE, Ubuntu, and Fedora.

The hard drives can be divided in one or more parts, known as partitions. The division of hard drive is described in partition table, stored in sector 0 of hard drive. Linux operating system requires at least one hard drive partition, namely for the root file system. It may use the swap files and swap partitions, however the latter are quite efficient. Thus, generally you may want second Linux hard drive partition devoted as the swap partitions. In some cases, improper use of hard drive management tools can cause data loss and need Linux Data Recovery to be sorted out.

On the Intel hardware, the BIOS (Basic Input/Output System) that boots up your system and can generally only access first 1024 cylinders of hard drive. Due to the same, you may need to create third hard drive partitions if your hard drive is large in size. This partitions is generally mounted on the /boot , for storing kernel image and some auxiliary files required at boot time, so that BIOS can access them.

You can create the manipulate the partition table in Linux using a menu drive program, known as fdisk. However, this tool can not understand the GPT (GUID Partition Table) and is not work with large partitions. Fdisk understands DOS partition table and BSD/SUN disklabels.

The Fdisk automatically obtains the hard drive geometry, if possible. It is not inevitably physical disk geometry (as modern hard drive don’t actually have physical geometry), but is disk geometry that is used for DOS type partition tables.

Generally everything works fine if only the Linux operating system is installed on your drive. But, in dual-boot configuration, you should let the Fdisk from other operating system create at least one partitions. While booting the Linux operating system, it considers partition table and attempts to derive what geometry is needed for effective cooperation with another operating system.

Before you proceed for any operation on your hard drive, it is recommended to create complete backup of your significant data. When you backup data using dd command, you need to be careful. A minor mistake may cause severe data loss and need Data Recovery Linux to be handled.

Linux Data Recovery is possible with the help of powerful third-party tools, known as Linux Recovery Software. The applications are particularly designed to carry out thorough scan of the drive and extract lost, missing, and inaccessible data from it.

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

Linux operating systems have come a long way now. Many of them are quite easy to operate. Corporations and government agencies have now started using Linux. One of the attractive factors for choosing Linux is that it is license free – apart from the fact that there are plenty of applications that work on Linux now (and they are license free too). Can you imagine all your staff using efficient and licensed business applications that are equivalent to MS Office, Photoshop (or other graphics package), utilities such as Zip, Emails….all this without paying any license fee to the vendor. Yes, you can run a business with very little, if any, license costs for the applications. Companies in Europe now favour Linux more. Linux support still looks like a black box.

While the Linux is attractive for any business, it requires different skill set; even different thinking to maintain Linux servers, some would argue. In a company that has a mix of machines with Windows operating system and Linux operating system it is often not justifiable to have a separate resource/engineer to help with Linux operating system. In those cases, it is worth outsourcing the Linux support.

Nowadays, students are coming out of their education institutions with Linux skills but not many of them. As the popularity of Linux seems to growing faster than the availability of skills, it makes business sense to consider outsourcing the Linux support. Linux support companies typically can work on all the flavours of Linux – Red Hat, SUSE, Fedora, CentOS, Debian, Ubuntu etc. Generally, you will find that Linux support companies can NOT only work with the Linux infrastructure but help with a lot of development (programming) jobs too.

By the way, if IT maintenance is not core business for the organisation, then of course, it will make sense to outsource the IT management to a company. Outsourcing has its own benefits and one of them is cost-reduction.

I’ll give you an example of the cost-reduction. We all know that many American companies went overseas – typically, India – to establish their own offshore support centres. Now they are selling them off to other “outsourcing” companies. For instance, if an American company called Acme Builders had its own support centre in India, it is selling the Indian operations to an IT outsourcing company. Do you know the reason they gave? Cost. Yes, they said it costs 25% more to run their own offshore support centre than outsourcing to an outsourcing provider. Isn’t that interesting?

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For Linux file systems, Superblock plays a vital role. It defines the file system itself. Linux uses this metadata structure to hold its file system information like file system type, size, mount status and also metadata information about other file system structures. If superblock is found to be corrupt, file system can’t be mounted. This causes data loss and hence needs Linux Data Recovery as the solution. Superblock defines file system type and if it is corrupt, it may fail to give to this information with an error similar to:

“Superblock does not describe correct file system”

The error also describes that system is unable to read the superblock. Also, if device contains the file system, then its superblock is corrupt and fsck is required with an alternate superblock.

By alternative superblock , it refers to its duplicate copies on disk. Linux maintains duplicate copies of Superblock to avoid Linux Recovery requirements. These are located at different disk locations. The primary superblock lies at location 0 and group descriptors 1-6. However backup copies can be located using the following command:

# dumpe2fs /dev/sda2 | grep superblock

It will display the backup locations of superblock. Using these locations of superblock, file system can be attempted to mount. However if the process fails because of corrupt superblock backups, we need to refresh the file system by formatting the drive. It will create new copies of all file system structures. Lost data can be later restored using backup. However if no valid backup exists, Linux Data Recovery applications can help recovering.

Linux Recovery software are the applications to recover lost data using specific scanning algorithms. These applications can carry out recovery in all cases like superblock corruption, inode table damage, group descriptors faults and others. These software offer graphically rich user interface and hence can be used easily. These products are safe for data as are designed as read-only. They offer quality features that assist users in recovery. But the software are not recommended to be installed on same drive to prevent overwriting.

Stellar Phoenix Linux Data Recovery is the powerful and safe application to recover data from ext2, ext3 and reiserFS file system based disks. This software supports most of the Linux distributions like Red Hat, SUSE, SlackWare, Turbo Linux, Gentoo, Fedora and others. The application is safe for Ext3 Recovery and can be easily used through its graphical interface, which is rich of features.

Maybe domination is too strong a word. Maybe not. The market conditions for Linux are as favorable as they have ever been. Apple and Microsoft have weaknesses that are either plainly evident, or will be revealed soon.

The general public is becoming more technologically savvy in general, and beginning to understand their options. There are just a few things that stand in the way of the general public’s adoption of the operating system, in my opinion. We’ll tackle Linux’s greatest opportunities and the weaknesses that can and do slow down its adoption as a mainstream OS.

Let’s start with the favorable environment: Microsoft is really hurting with Vista. I mean badly. They’ve made an operating system that has locked itself out of all but the new PC market. Then, it nags you like a small child each time you need install a program, or download something, or sync your mp3 player. The business market will hardly touch this. Now, they’ve hired Jerry Seinfeld to fix it all. Somebody needs to tell them that just because he idolizes Superman, doesn’t mean he is Superman. Microsoft looks tired. They should probably just release an OS called XPlus( for the uninitiated, that would be XP SP4.)

Apple, while gaining market share and shooting at Microsoft, is now worth more than Google. There are problems that lie down the path of growth. Apple has always bragged about security, and the fact that you don’t need anti-virus for their systems. My computer teacher( millenia ago ) told me it wasn’t needed for one simple reason: Crackers(known to the general public as “hackers”) didn’t find it very profitable to crack a MAC. The adoption rate was too low. Now that the adoption rate has increased, the prospect of savaging bragadocious fanboys is almost irresistible. What could be better than humiliating the arrogant, artsy crowd?

Then there’s the fact that Microsoft seems a kindly old grandfather when it comes to openness. Steve Jobs holds his cards ridiculously close to his chest. While this might not bother the average user, it will get on the nerves of those who want complete control of their system. Apple has tighter DRM than Microsoft, and has recently come under fire for their invisible software upgrades. It won’t take long for the more adventurous user to download another OS and find other programs to meet her needs.

Linux has made great strides because of one flavor of their operating system: Ubuntu. Talk all you want about how Debian, Fedora, and SUSE are the pure, unadulterated nectar of the Linux gods. Mark Shuttleworth’s Canonical has made Linux palatable for the average user. The install process is simple, it’s free, and adding programs is a snap using Synaptic. Wireless support is vastly better in this distro, as is printer support. Plus, it boasts the largest Linux community.

That community tends to write programs that solve extremely specific problems. They are also writing programs that meet or exceed closed source, commercially available software. This is the most vital thing for the continued growth of Linux as an operating system.

The security problems for Linux are almost non-existent at present time. It’s pretty air tight, not to say that it can’t be done, it’s just that it is far more profitable to hack internet communications than it is to hack a Linux box. Plus, the Linux community will track you down and make you eat your hard drive if you take out one of their PC’s. This may change as well, with broader adoption, but right now I am not worried about some Windoze script kiddie hacking my box.

If all this is true, then what stands in the way of further Linux adoption?

Sound. I bet you thought I was going to say “the command line”. We’ll get to that later. Linux sound is a pain to configure, and is really horrible if you want to run more than one program that requires sound output. There are a couple of different ways to implement sound in Linux. Some of them are stable, some are not. In 50% of all cases, one application’s sound will work, while another will not. Yesterday, I ran into a case where a sound server actually kept an entire application from running. Until Linux converts to a single, common sound architecture, then it will keep the average user dependent on…

The command line. You knew it was coming, I gave you fair warning. I enjoy the command line, to a certain extent. It allows me to instantly kill a program when it hangs, no questions asked. I can edit configuration files without opening a text editor. Just today, an article came across my screen, in which the author stated that you could use Linux forever without having to touch the command line. While technically true, that assertion is misleading, at best. All help articles in Linux forums start with, or assume you have already opened the command line. If you need to fix something, you will be using the CL, or you will not be using Linux very long.

This is something that people are going to have to come to terms with, unless Linux kernels and library sources are closed. What will hopefully happen is a more accessible command line integrated into the various window managers as part of the default configuration. Predictive commands(and the ability for expert users to turn this feature off) should play a huge roll when delivering the rollout to the average user. The final holdup is…

Developers, Developers, Developers. So we laughed at Steve “MonkeyBoy” Ballmer during his outburst of “irrational exuberance”. Major developers of closed-source software will have to get on board for the full adoption of Linux. Even though I love to GIMP, and am huge devotee, I miss the incredible batch processing abilities, and clean interface of Photoshop CS3(GIMPShop doesn’t cut it). I just do. I miss Flash. I don’t want to dual boot, or use WINE. I want a natively run solution. That is what is currently missing in the Linux equation. I want a peanut butter sandwich, not a bologna sandwich. Just because you can eat it, doesn’t mean you enjoy it as much. The common Windows user feels a far greater fear than I do in this regard, and they won’t give up their familiar programs and OS without a serious fight.

For every flaw, Linux has thousands of advantages. Linux will become a major player on the OS scene, has(and will) be the greatest bridge on the path to platform independent software and cloud computing. It will. The question is, how soon will we, as the Linux community, stop arguing over whose distro is better, and have a conversation about which path it will take to domination as an operating system.

Operating system selection has almost always locked consumers into the Microsoft Windows operating systems, but recently many manufacturers have started to offer Linux alternatives. Lenovo has started to offer SUSE Linux Enterprise Desktop 10 on some ThinkPad models, in addition to Vista and XP. This review covers the 14″ T61 with the “SLED 10″ Linux operating system.

Lenovo and Novell estimate that a major portion of the business workforce can transition from Microsoft Windows to SLED 10 on a ThinkPad “without skipping a beat”. In addition, the companies highlight some of the features of this OS, such as interoperability with current IT environments, OpenOffice.org productivity suite, integrated VPN, firewall and anti-virus protection, and support for popular multimedia applications.

New ThinkPad is traditionally whole black. It is very well built as usual. Nothing scrapes and the keyboard is nice acurrate.Titan-Magnesium hardiness was improved by hardening back part of chassis. The only thing where is the influence of Lenovo on IBM shown are the connectors for reproductions and microphone.

Lenovo says it will provide customer support for the hardware and the operating system, while Novell will be responsible for updates. Linux has chiefly been popular on servers and more recently has made inroads in embedded computing devices such as phones, but it’s never made much headway on desktop and laptop PCs. Nevertheless, Suse has long championed Linux on PCs.

The cooling system is ingenious; it’s simply the best out there and beats the MacBook Pro by a mile even though both machines are 1 inch thick. Cool air is sucked in from the bottom though many thin holes that make it impossible to block all of them when using on lap. Most of the air comes from the top left side, judging by relative temperature. Hot air is exhausted over the back side (away from the user). On idle battery, temperature stayed around 37 deg Celsius. The fan is also quiet and rarely turns on; it seems to run more often on AC than on battery.

System specifications:

* Processor: Intel T7300 Core 2 Duo (2.0GHz, 800MHz FSB, 4MB Cache)

* Graphics: Intel GMA X3100

* Operating System: Novell SLED 10

* Display: WXGA+ 1440 x 900 (LG screen)

* Hard Drive: 80GB 5400RPM

* Memory: 1GB (1GB x 1), up to 4GB max

* Ports: 3x USB 2.0, 1x FireWire, Monitor out, modem, Ethernet, headphone out, microphone in

* Slots: PC Card Slot and Smart Card reader

* Optical Drive: CDRW/DVD-ROM

* Dimensions: 13.2″ x 9.3″ x 1.09 – 1.26″ (335mm x 237mm x 27.6 – 31.9mm)

* Weight: 5.5lbs

As a business consultant, web designer and photographer my technical know-how around doing system administration on my Microsoft desktop is limited and sometimes I do require the assistant of my computer engineering son to get it right. In a Microsoft Environment, keeping updated with respect to potential security breaches and patches is a constant vigil. The rigor of keeping current with OS updates, Norton updates and Spyware updates is time consuming. Valuable business hours each week are spend and lost on this task of self-administration dictated by the Microsoft Operating Environment.

So with the purchase of an IBM T40 (a tough notebook), increasing system administration time was not an option. This alone forced an serious consideration of Linux as an alternative operating environment. That was five years ago. Now an established Linux user, I can clearly profess the capabilities and benefits of Linux for small and large businesses, especially, when it comes to notebook deployment.

What Linux variant is best for small business and notebook deployment in your company?

As a small and medium business development manager with Sun Microsystems, exposure to Linux and the debate around its viability was a daily event. Questioning and challenging the virtues of Open Source (FREE) Linux versus Licensed Linux versions like Red Hat and Novell SuSE continues to this day . After years of personal use of Open Source (Free) Linux, I can never go back to running the Microsoft Operating Environment on my notebook. And once you can get Linux versions of Quick books, Quick Tax and Picasa (now available on Linux), there is no reason to stay in that perpetual administrative nightmare world of Microsoft.

Having successfully deployed two Open Source Linux variants on my IBM T40 notebook over the last 5 years, a compelling comparison can be made between Fedora and Ubuntu. Fedora, the Open Source version of Red Hat, required the installation expertise of some Linux gurus from Belleville Ontario. It worked fine, but required some Linux ninja system administration every 6-9 months. Administration items applied during these visits included upgrades to Open Office (the open source version of Star Office), Linux OS fixes and new peripheral drivers. This, again, turned out to be a drain on my scarce time for doing real business.

Now the Linux called Ubuntu is installed on my notebook. Ubuntu by Canonical is a full Open Source Linux based on Debian Linux. Ubuntu is now available on Dell systems and Federal Governments are adding this Linux operating environment to their list of standard available OS’s for all desktop and notebook computers.

Right out of the gate, Ubuntu was simple to install. You could even bring down a trial copy to experience exactly how it would behave on your notebook before downloading and committing the Ubuntu OS environment to your machine. But the best part is that Ubuntu continuously keeps on top of OS and all related application software updates. Ubuntu has an Update Manager that magically appears in desktop tool bar. And with a simple click (and password) you are kept current on the latest versions of Ubuntu patches, any Linux application software you have installed from Canonical and Open Office upgrades.

With Linux rebooting your machine after an update is nearly non-existent.

Oh, as an added treat with Ubuntu, Ubuntu boots up on your machine in less than a minute. I still go get a coffee when my Microsoft desktop is booting up. An additional benefit of Ubuntu: there is no requirement for installing ant-virus and anti-spyware software. Ubuntu inherently repels these vial scourges of the internet.

With Ubuntu your system administration life will become simple and painless. You can spend more quality business hours selling and marketing.

Want to cut hidden costs in your organization that manifest themselves as Microsoft self-administration by your end users?

Ubuntu is a must for you or your IT folks to consider. Seriously consider, test and deploy.