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How to Solve 'Unknown' Partition Issue in Windows?
- by Elfin Ruler
Each physical disk is partitioned into several partitions. The disk MBR (Master Boot Record) and optionally EBRs (Extended Boot Records) hold the metadata information of these partitions. These tables collectively form partition table. Partition tables can get corrupt for several reasons, causing different symptoms, including but not limited to the one discussed later. In any of such cases, the solution might compel you to restore from backup. But if no suitable backup is present for the affected partition, you need a windows data recovery solution that could retrieve the entire information safely.
You may face several instances when you can find your Windows hard disk partitions inaccessible with 'Unknown' partition type. Some of them are here below:
Your Windows-based computer system gets corrupted due to virus attack. The next time, when you boot the computer, it doesn't boot and Fdisk displays the partitions with 'Unknown' typeYou install a third-party software, which creates an unknown partition to image the operating system. You cannot delete such partition because it is currently in use by the softwareYou try to install Windows, but the Setup declares the partition with 'Unknown' type
Cause
'Unknown' partition type generally indicates that the partition is corrupt. However, in second scenario, the unknown partiton has been created by the third-party software for its use.
Solution
You can try the following solutions to overcome the 'Unknown' partition type issue:
You can manually edit the partition type in MBR. To see this information, you can use Ftdmpnt.exe tool that displays boot record and partition information for each hard drive of system. If this fails, you need to remove the corrupted disk partition and create it as new.
In case when the third-party software has created an unknown partition that cannot be deleted, you need to perform clean reinstall of Windows.
The above operations cause deletes the entire data and thus, require a complete data backup to restore. For any reason, if it is unavailable or is corrupt, you need to opt for windows partition recovery solutions. However, it is recommended to recover data using these windows data recovery utilities prior to reformat the drive.
Stellar Phoenix Windows Data Recovery is an advanced solution known for complete retrieval of lost and missing Windows partitions. It uses powerful scanning algorithms while adhering to data safety. This windows partition recovery utility is compatible with Windows 7, Vista, XP, 2003 and 2000.
About the Author
Elfin Ruler is a data recovery expert doing research from last 6 years on raid data recovery and file data recovery.
