A virtual disk is a disk with some characteristics of the general hard drive, in actual it is the emulation of a hard drive where a traditional Linux file system exists on physical disk partition.

Because the virtual disk offers more flexibility of data storage than the divisions, users consider converting all their file system divisions to the virtual disks. After converting divisions to virtual disk, you can access them only via virtual disk nodes.

To migrate to a virtual disk from system based divisions, unmount your Linux file system on the division that you want to convert. Then create simple virtual disk for every division with the help of Virtual Disk Manager. Allocate divisions to virtual disks. The divisions would be removed automatically once the virtual disks are assigned to them.

When the Linux file system is in the simple virtual disk pattern, migration to another array pattern could be wrong without making the drive offline. Always make sure that the divisions are not accessed during migration process.

To simply convert file system divisions to virtual disk we need to follow the following steps:

? Unmount the file system on divisions, which you wish to convert

? For every disk division, choose New from Disk menu, insert a simple virtual disk and allocate divisions to virtual disk. It overlays every division with simple virtual disk.

? For every disk division, choose Modify from Disk Menu and migrate simple virtual disk to desired RAID* type.

? Use File System Manager for updating the information of mounted file system. Replace the divvy** device nodes of file system with their virtual disk ones.

In this way, you easily convert your hard drive to a virtual disk and can take benefit of greater flexibility and improved performance. But if the conversion process gets interrupted by any of the reasons like sudden power failure, irresponsive operating system, operating system crash, unexpected system shutdown or restart because of already mounted volume etc. we may face critical problems of data loss.

Not all Linux systems are licensed to use Virtual Disk Manager. Unfortunately, if your system isn’t licensed and you are trying to convert your partitions, Virtual Disk Manager exits with some error messages.

All these situations put you in trouble of data loss and you need to perform Linux Recovery to overcome this problem. The Data recovery in Linux can easily be achieved using third party applications, known as Linux data recovery software. Linux data recovery software are particularly designed to meet recovery requirements of all Linux users.

Stellar Phoenix Linux Data Recovery software is a trusted Linux recovery tool, which efficiently recovers your lost, missing and inaccessible data from Ext2, Ext3 and ReiserFS file systems based hard drives. It supports recovery from all the Linux distributions. Stellar Phoenix Linux Data Recovery has a simple and user-friendly interface, which allows us to have ‘Do It Yourself’ data recovery in Linux.

Consider the following scenario. You resize your Windows Vista partition using in-built Disk Manger tool to free up some hard drive space. Then you install Linux on the newly created Ext4 hard drive partitions. At last, you create another NTFS file system partition for storing data that you formatted in Windows Vista and end up with a partition scheme that is similar to the following one:

sda1 (primary) Hidden (Recovery)
sda2 (primary) Vista C: (NTFS)
sda3 (primary) Linux (Ext4)
sda5 (extended) Swap Swap (Swap)
sda6 (extended) Data D: (NTFS)

Your systems works properly until you download and install security updates in Windows Vista. After applying the updates, when you boot your Linux system next time, fsck gives you a number of error messages about the multiply-claimed blocks by the Inodes of udev rule files. Udev corruption creates a number of issues with your Linux computer and renders your valuable data inaccessible.

In Linux operating system, udev is a device manage for 2.6 series of kernel. It primarily manges the device nodes in /dev. This is successor of the hotplug and devfs that meas it handles /dev directory and all the user space actions.

In such critical situations, you need to replace the damaged kernel files or even the kernel. It is possible by formatting the hard drive and reinstalling operating system. Although, formatting removes all of the hard drive errors, but also delete all the files from hard drive. In Such scenarios, you require Data Recovery Linux to extract data from formatted hard drive.

The Linux Data Recovery is possible through third-party applications
, known as Linux Recovery Software. The tools perform extensive scan of entire hard drive and extract all the data from it. With rich graphical user interface and read-only conduct, the applications are easy and safe to use.

Stellar Phoenix Linux Data Recovery is a comprehensive software to ensure absolute and quick recovery of all your lost data from Ext4, Ext3, Ext2, FAT12, FAT16 and FAT32 file system volumes. The application works will most of the major distributions of Linux operating system including SUSE, Ubuntu, Red Hat and Fedora.