Stellar Knowledge Base

Lost Partitions While Upgrading from Windows 7 to Windows 8

Author : Creative Team Updated on April 8, 2016

Installing Windows on a clean hard drive is not at all a problem, as it contains no data and the odds for situations like data loss or corruption cannot come across. In contrast, partitioning a hard drive that contains data might cause weird situations like data loss or corruption. For instance, inefficient repartitioning might cause corruption in one or more existing partitions and eventually cause corruption in those partitions. Well, lost or inaccessible partitions can be recovered using Stellar Phoenix Partition Recovery software. However, taking precautionary measures is a wise as well as a productive decision.

Hard Drive Partitioning

Hard drive partitioning results in multiple partitions of equal or unequal sizes where each partition acts as a separate drive connected to the computer. Based on the types of data you have for storage, you can create multiple partitions on the hard drive, which also facilitates you multi-boot your computer, i.e. installing more than one operating system in separate partitions or single hard drive.

Efficient Partitioning

Partitioning a hard drive efficiently means creating the required number of partitions without affecting the data stored on the hard drive. An efficient and reliable partition manager is the prime requirement to succeed in drive partitioning. Since Windows does not allow resizing partitions if you create them once, the only option you have to create multiple partitions is during Windows installation.

You can split one partition into two or more other partitions from Disk Management (i.e. a system utility), but it requires you to be experienced to get the job done successfully. Otherwise, it may cause partition loss.

Note: Before deleting a partition to create multiple ones using ‘Disk Management’ utility, make sure the partition contains no data.


Inefficient Partitioning

Inefficient partitioning refers to a state of data loss or missing partition(s) either due to lack of experience or because of an unreliable partition manager used for the task. Besides, a corrupt Disk Management tool might also be responsible for a state of data loss.

Suppose you are installing Windows 8 on your computer having Windows 7 currently installed on it. For a clean OS install, you delete and recreate the primary partition from the installation screen in the boot menu. However, your computer fails to show the primary and a secondary partition that contained crucial files. In such a state, you cannot carry on with Windows 8 installation. Moreover, this leaves your computer in a state of inaccessibility and you eventually fail to access your data stored in other secondary partitions.

Steps to Recover Lost Partition

While installing Windows 8 on a brand new hard drive, you can split the hard drive into several partitions, based on your requirements. However, you must be careful when the hard drive contains data, as your carelessness might cause corruption or loss of one or more partitions containing data. In such a scenario, Stellar Phoenix Partition Recovery software enables you recover lost partition keeping the data intact. Go on with the following steps to recover lost partitions:

Important: Since the boot partition is lost, you need to attach this hard drive to another Windows-based computer and scan for the lost partition using this partition recovery software.

  Launch Stellar Phoenix Windows Data Recovery and click on 'Click Here to Search Lost Volumes' in Data Recovery tab under Drive Recovery option.

  Under the list Select Hard Drive to Search Lost Volumes, select the right hard drive and click the Search Lost Volume.

a. Choose Quick scan option for faster scan.
b. Choose Deep for a slow, but better scan.

  This will begin scanning the selected hard drive for lost volumes and list the ones it finds in the Select Volume to Recover Data list. Select such volumes and scan them individually for lost data recovery.

  If you are not satisfied with the scanned results, go with the Raw Recovery option to scan and recover lost partitions.

With the lost volume(s) and the lost data recovered, save it to a secondary drive. Besides, move all you data to the secondary drive, and then format the hard drive clean. Install Windows 8 or 7 based on your requirements and/or priority. Also, create required number of partitions in the mean time.

Not to Forget

In case you install Windows 8 on your Windows 7-based computer and later find one or more partitions not showing up on Windows 8, scan the hard drive with Stellar Phoenix Partition Recovery and recover them keeping the data intact. With the lost partitions recovered, you can recover the data stored on them.

The software provides multiple options (i.e. Search Lost Volumes and Raw Recovery) to recover lost volumes and the data where Raw Recovery enables scanning the hard drive for lost volumes and the data using a special ‘signature-based’ scan and recovery mechanism that give efficient results.


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