By Michael / Last Updated June 23, 2021

How to fix GPT partition table?

Many computer users may find that the computer disk couldn’t be opened while you use computer. This situation usually occurs after an unexpected power failure, forced shutdown, etc. These operations can result in loss of data corruption in the hard disk partition table or the primary boot sector. So how do you solve this problem?

Fix GPT partition table with AOMEI Partition Assistant

Here we recommend that you use AOMEI Partition Assistant to repair the partition table. It can help you to make a bootable PE disk, and repair the computer in PE mode. AOMEI Partition Assistant is a free, professional-grade, lossless partition tool that is perfectly compatible with the current mainstream operating systems on the market. It provides simple, easy-to-use disk partition management. In addition, AOMEI Partition Assistant also provides you many useful functions like check partition, split/merge/resize partition, etc. Follow the guide below to solve this problem.

Recover Partition

First, we need to make a bootable PE disk, then check and repair the system partition in the PE environment. What you need to prepare is a blank USB flash drive (preferably larger than 8GB). The specific steps are as follow:

Step 1. Download, install and run AOMEI Partition Assistant. Connect your USB flash drive to your computer and make sure it can be detected. Then click “Make Bootable Media” at the left panel and then click “Next” in the pop-up window.

Make Bootable Media

Step 2. Click “Next” to ensure creating WinPE bootable media.


Step 3. In the Make Bootable Media Wizard, tick “USB Boot Drive” and click “Proceed”.

USB Boot Drive

Step 4. After you create the bootable media, don’t remove the USB drive, restart your computer and follow the prompts to enter Win PE. Then, run AOMEI Partition Assistant, click the disk you want to recover and select “Partition Recovery Wizard” on the left panel.

Partition Recovery Wizard

Step 5. Select the disk which contains lost partition and click “Next”.

Select Disk

Step 6.Select “Fast Search” in the pop-up window. It’s recommended to select this option for the first time. This option takes less time. If you cannot recover the lost partition, you can select “Full Search” later.

Fast Search

Step 7. Then, select the lost partition to recover and click “Next”. If you are not sure, you can click “Explore files in this selected partition” to view the files in the partition. And click “Finish” at last.

Select Lost Partition

After these operations, you can check whether your partition is restored or not in Disk Management or File Explore.

Rebuild MBR

After your partition is restored, do the following steps in AOMEI Partition Assistant:

Step 1. Right click the disk you want to repair and then select “Rebuild MBR”.

Rebuild MBR

Step 2. After that, choose the proper MBR type for Windows 7 in the popping up window.

Choose MBR Type

Step 3. Then, click “Apply” > “Proceed” to commit the change.

Check Bad Sector

Then you can apply AOMEI Partition Assistant to check bad sectors, and the step by step guide is below:

1. Right click the partition you want to check and select “Advanced” > “Check Partition”.

Check Partition

2. In the pop-up window, select the way of checking errors to perform. There are three choices, simply choose the last one “Check whether there is bad sector on the partition”. And click “OK” to continue.

Select Check Option

3. After that, click “Start” button to check.

Check Bad Sectors

After checking the bad sector, if the hard disk has a bad sector, you’d better backup data in advance if possible. If there are important data in the bad sectors, you should send the hard disk directly to the professional data recovery center to recover the data. In addition, not all bad sectors can be fixed.


From all above, you can realize that seek out the reasons behind the error about partition table, take measures based on the reasons and you will be able to tackle with the problem easily and effectively. AOMEI Partition Assistant can be the best tool which can help you to fix GPT partition table in Windows 7/8/9. Besides create bootable media and rebuild MBR, it also has many other powerful functions like Resize/Delete/Move Partitions, Migrate OS to SSD, Convert data disk between MBR and GPT partition styles and so on. If you want to align partition, you can upgrade to AOMEI Partition Assistant Professional to complete this operation.