How to Recover Data from Partitioned Hard Drive

Do you feel helpless when accidentally partitioned a hard drive without making a data backup? EaseUS Data Recovery Wizard is a powerful partition data recovery tool that is able to recover data from a partitioned hard drive and recover data from hard disk after deleting partition.

Table of Contents

What Is Partitioning A Hard Drive?

To divide memory or mass storage into isolated sections, in DOS systems, you can partition a disk so each partition will behave like a separate disk drive. Partitioning is particularly useful if you're running more than one operating system. For example, you might reserve one partition for Windows and another for UNIX.

In addition, partitioning on DOS and Windows machines can improve disk efficiency. This is because the FAT/NTFS system used by these operating systems automatically assigns cluster size based on the disk size: the larger the disk, the larger the cluster. Unfortunately, large clusters can result in wasted disk space, called slack space. There is an entire sector of the software industry devoted to building utilities that let you partition your hard disk, such as Fdisk, Partition Magic, EaseUS Partition Master.

Use partition tools ( such as Fdisk, Partition Magic, EaseUS Partition Master) to repartition hard drives is a common occurrence for using a hard drive, but you need to take care data. Partitioning hard drive into many chunks will erase data if it is done incorrectly or problems exist on the hard disk.

How to Recover Data from Partitioned Hard Drive

Frequently when a repartition is attempted, the program will not terminate correctly, crash before it finishes. Due to the corruption of the logical disk structure, this can be physical problems (e.g. bad sectors on the hard disk), incorrect software installation etc. Such as Partition Magic in the wrong operation, unexpected termination in resizing partition or program crash due to power error or more problems of the hard disks (e.g. due to bad sectors etc.). Where previously the computer would boot and be usable, systems often refuse to start and may produce the following error messages: (these errors are frequently displayed on a black screen with white text)

  • No boot device
  • Operating System not found
  • Primary Hard Disk not found. Press F1 to Continue
  • Master Boot Record Not Found
  • Invalid or corrupt FAT
  • Invalid partition table entries
  • Invalid sector
  • Cannot find file or program
  • Invalid
  • Primary/Secondary Hard disk failure
  • Non-system disk
  • Disk error

In case any one of the errors found while partitioning a hard drive and data and data was lost, do you feel helpless without making a data backup? No worry. EaseUS Data Recovery Wizard is a powerful hard disk data recovery tool that is able to recover data from a partitioned hard drive and recover data from hard disk after deleting the partition. 

Tip: If you cannot boot the computer after partitioning the system drive by wrong, you can use data recovery bootable disk or connect the hard drive to another computer to recover lost data.

To recover data from partitioned hard drive, follow the guide:

Step 1. Select and scan the lost partition

Launch EaseUS Data Recovery Wizard, select the "Lost Partition" and click "Scan" to search for all the lost data. If there are many lost partitions, you can identify them through its partition size.

select the deleted partition in the lost partition option

Step 2. View the results

Apply the "Filter" feature or click the "Search files or folders" button to find the lost files.

Preview the found partition data

Step 3. Recover data from the lost partition

Choose all found data and click "Recover" to restore them. 

recover the wanted data from the deleted partition
Do You Need Specialized Data Recovery Services?
You may need further help for tough data loss situations like reformatting drive, RAW disk, partition loss, repartition failures and system boot error. Consult with EaseUS Data Recovery Experts for cost-efficient one-on-one manual recovery service. They could offer the following services after FREE diagnosis:
1. Unformat the drive
2. Repair the RAID, RAW disk or operating system
3. Recover lost partition (the one that cannot be recovered by software)

Was This Page Helpful?

Updated by Daisy

Daisy is the Senior editor of the writing team for EaseUS. She has been working in EaseUS for over ten years, starting from a technical writer to a team leader of the content group. As a professional author for over 10 years, she writes a lot to help people overcome their tech troubles.

Read full bio

Written by Jean

Author Jean has been writing tech articles since she was graduated from university. She has been part of the EaseUS team for over 5 years. Her special focuses are data recovery, disk partitioning, data space optimization, data backup and Mac OS. By the way, she's an aviation fan!

Read full bio

Product Reviews

TrustScore 4.7 | 323 reviews
  • EaseUS Data Recovery Wizard is a powerful system recovery software, designed to enable you to recover files you’ve deleted accidentally, potentially lost to malware or an entire hard drive partition.

    Read More
  • EaseUS Data Recovery Wizard is the best we've seen. It's far from perfect, partly because today's advanced disk technology makes data-recovery more difficult than it was with the simpler technology of the past.

    Read More
  • EaseUS Data Recovery Wizard Pro has a reputation as one of the best data recovery software programs on the market. It comes with a selection of advanced features, including partition recovery, formatted drive restoration, and corrupted file repair.

    Read More