By Lora / Last update June 21, 2022

"How can I recover partition table? Thx."

Before using the hard disk, you must partition it first. When your hard disk has been partitioned, a partition table will be generated.

The partition table is a table on the disk, which summarizes and describes the size and location of the partitions. It is located in the first sector (cylinder 0, head 0, sector 1, MBR) of a hard disk.

The partition table generally has two schemes for storing partition information, the traditional MBR (Master Boot Record) partition table and GPT (GUID Partition Table) partition table, including the start and end locations of the partition on the physical disk.

mbr-vs-gpt

This allows your operating system to know which sectors belong to which partition and which partition is bootable.

Pitifully, partition table error is not very rare. You may encounter a GPT partition table recovery issue as well as an MBR partition table recovery issue.

When using the computer, it is not difficult for users to find that a certain partition is easily lost or damaged, resulting in the loss of some partitions storing important data.

In this case, you need to recover partition table first and restore your partitions and data immediately to minimize the data and profit loss you suffer. First of all, let’s get to know more about the partition table issue.

Partition table error

How can users notice that there is a partition table issue on their PC? Moreover, how does it occur? Some common manifestations and possible causes are listed below, check if you have encountered them.

Common manifestations of partition table error

  • "Invalid Partition Table" Warning.

invalid-partition-table

  • "Operating System Not Found" Warning.
  • Unable to enter the Windows interface when booting the computer.
  • Inability for OS to correctly recognize the hard disk.
  • Inability for OS to use Fdisk to partition.
  • Unable to delete the partition.
  • Non-System Disk Or Disk Error.

non-system-disk-or-disk-error

Common causes of partition table issue

Many factors that cause partition table loss or failure as shown below.

  • Virus attack. Virus invasion is a major cause of partition table and partition loss.
  • Power outage. Sudden power failure during your normal computer operation or partitioning process may cause bad sectors on the disk or loss of partition.
  • Improper operation. Improper operation or misoperation when reinstalling the system may cause the disk to initialize and cause all partitions to disappear.
  • Improper ejection of external devices. When using an external device such as a USB flash drive or a mobile hard disk, the partition table may be lost due to sudden changes in current when plugging or unplugging.

safe-to-remove-hardware

  • Permission conflict. When a user uses multiple partitioning tools to operate, the partitioning operation may be forcibly interrupted due to different permissions between different software, resulting in a disordered partition table.

How to recover partition table?

When the partition table gets corrupted, it is in urgent need of a remedy to recover it. In general, it will be difficult for an ordinary user to fix disk or partition issues.

Given that, you might as well choose a Windows partition manager tool to help you. Here is a good third-party tool recommendation, AOMEI Partition Assistant.

To restore partition table, a powerful embedded feature can be your helper: "Rebuild MBR". It assists users to easily recreate MBR to fix errors.

Apart form that, this tool is equipped with more amazing features. Using it, you could scan hard disk for deleted partitions whitin several seconds to minutes. 

Apart from that, it can leave you an impression in more aspects.

Easy to operate. Offering an eye-pleasing and simple user interface and guide, it is easy to handle.
High efficiency. It helps manage your partition and disk smartly and effectively with a bunch of features.
Highly compatible. Work well with Windows 11/10/8/7/XP/Vitsa, etc.

Now please follow the steps to fix it.

Tips: Create a backup before attempting to do further operations. 

Step 1. Install and enjoy the AOMRI Partition Assistant Pro demo version.

Download Demo Win 11/10/8.1/8/7/XP
Secure Download

Step 2. Right-click on the unbootable system disk, and click Rebuild MBR.

rebuild-mbr

Step 3. Choose the corresponding Operating System of your device to set the type of MBR on it, then click OK.

select-mbr-type

Step 4. Preview the operation that is about to carry out, then click Proceed > Apply.

apply

Then you will have successfully perform MBR partition table recovery.

Guide to recover lost partition

In addition to the need to rebuild MBR to recover partition table, users may also face a partition loss due to partition table errors.

When a partition gets missing or lost, precious data and files will be lost as well, which is the last thing that users want to meet.

Here are several ways to solve this problem.

Method 1: Recover lost partition with Disk Management

If you need to initialize the hard disk to repair your damaged or missing partition table, you can try to do it manually by using Disk Management.

Step 1. Start Control Panel on your PC, then go to System and Security.

system-and-security

Step 2. Click Administrative Tools​​​​​​.

click-administration-tools

Step 3. Click Computer Management.

click-computer-management

Step 4. Click Disk Management on the left side of the panel.

click-disk-management

Step 5. Locate the unallocated partition, and right-click it. Then choose Initialize Disk.

initialize-disk

Thus your whole disk is initialized successfully, and the lost or damaged partition table and lost partition will come back to the normal status.

Method 2: Recover lost partition via AOMEI Partition Assistant

For safety's sake and to save your time, you may also utilize the  “Partition Recovery Wizard” tool in AOMEI Partition Assistant prepared for you.

This feature is also very helpful to recover accidentally deleted partition no matter what Windwos operating systems you are using: Windows 11/10/8/7, etc. 

What's more, multiple file systems are supported: NTFS/exFAT/FAT32/ext3/ext4/ReFS, etc. If you are using an ext4 partition, you could also recover ext4 partition easily.

Now, let’s follow the steps below to recover the partition.

Step 1. Install and launch AOMEI Partition Assistant.

Step 2. Click Partition Recovery Wizard on the left side of the window. Then Select the deleted partition to be recovered, then click Next.

click-partition-recovery-wizard

Step 3. Here you can see 2 modes of searching. It’s recommended that you use Fast Search for time-saving purposes, if it doesn’t work, utilize Full Search. Click Next to move on.

fast-search-full-search

Step 4. The lost partitions will be listed in the list box, select the partition that needs to be recovered, then click Proceed.

select-lost-partition

After that, when you see the congratulation notice, your lost partition has been back.

Related suggestion

In this post, the method to recover partition tables and to recover lost partitions have been introduced in detail. besides, we would like to offer you some more suggestions.

To prolong the service life of your hard drive, here are some hard drive maintenance suggestions prepared for you.

  • Keep the working environment clean.
  • Use anti-virus software to check and kill viruses on the hard disk regularly.
  • If your hard drive is an SDD, please reserve enough storage space to prevent the SDD from slowing down or even crashing.
  • Replace the firmware timely, such as BIOS, to reduce the wear and tear of the memory chip and maintain the performance and life of the hard disk.

Also, to prevent any data loss from GPT/MBR hard disks, it is a better bet to back up your data from time to time.  Using AOMEI Backupper to create backups for Windows is a good idea.

Or, if you are facing data loss on hard disks right now, try to seek help from AOMEI Data Recovery for Windows, which can assist users to locate their deleted or missing files fast within only 3 steps.