Microsoft periodically launches updates and new service packs of its products to improve them. The updates can directly be installed on your existing operating system. After installing updates, you can take advantages of the enhanced features of Windows operating system. However, in some situations, the installation process cannot complete successfully and the system remains in partially updated state. At this point, your Windows hard drive partitions become inaccessible and you come across severe partition loss situations. In order to work around this behavior of Microsoft Windows operating system, you must go for Partition Recovery Software, if the backup is unavailable.

In a practical scenario, when you install updates of Microsoft Windows XP on dynamic disk, you might come across the below error message:
"Windows XP cannot recognize the partition you selected.
Setup cannot install Windows XP on this partition. However, you can go back to the previous screen, delete the partition. and then select the resulting unpartitioned space.

Setup will then create a new partition on which you can install Windows XP."
After the above error message, installation process stops halfway and your Windows computer becomes unbootable/inaccessible. At this point of time, you are required to identify the actual cause of this behavior and then fix it through Partition Recovery.

Grounds of the problem
You may face this problem due to any of the below reasons:
The hard drive of your Windows computer is unrecognizable.
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