An upgrade to a later version of Windows leads to better computer performance and stability. However, experts suggest that whenever you upgrade your Windows computer, always backup your important data. The reason is that if the upgrade is interrupted or error is experienced, it may affect your hard disk partition and even lead to its inaccessibility. Data once lost can be re-accessed by restoring it from backup or using some Partition Recovery techniques.

The above statements will be more clear with the scenario discussed herewith for Windows XP. One of the Windows XP users upgrades his computer to a later version. The upgrade process completes and after this, when the user tries to start the computer, he/she observes that a particular hard disk partition, on which the operating system was installed, is not accessible. User cannot access the system partition, i.e. the partition. Consequently, access to the computer and its data is not possible.

Reason

One of the main causes for the above behavior to exhibit is that system partition has got corrupted. This can occur if the partition table get errors because of Windows XP upgrade.

Another reason for the same issue can be BIOS-related: either you are using an incompatible BIOS or hard disk is not correctly configured in CMOS steup.

Solution

The recovery tips for the described issue are:

You can try updating the computer BIOS and check if this can enable your system partition to be detected Also, you should check if hard disk has been properly configured within CMOS setup. Depending on your BIOS type, you can try changing the access mode of hard disk drive to 'LBA' or 'Large' If the partition is still inaccessible, you need to delete and then recreate the corrupted partition.

After recreating the partition, you need to restore lost data from backup. But if you do not have any suitable backup in place, use a third-party utility to Recover Windows Partition. Easy to operate Partition Recovery software have rich graphical interface and thus make Windows data recovery an easy job.

Stellar Phoenix Windows Data Recovery is the finest utility that recovers lost data from computers running Windows 7, Vista, XP, 2003, or 2000. A world-known product, it incorporates safe scanning algorithms to locate and Recover Windows Partition that has been lost, corrupted, deleted, or formatted. With its advanced features, this recovery software is the best data recovery option.

Daisy a student of Mass Communication doing research on Partition recovery software. He is also a freelancer for http://www.partitionrecovery-software.com/window-ntfs-fat-recovery.php