EaseUS Partition Master

How to Fix Invalid or Damaged Bootable Partition in Windows

Troubleshoot and repair invalid or damaged bootable partitions in Windows with this concise guide to regaining system functionality in just a few easy steps.

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Updated by Roxanne on Dec 19, 2023

Have you ever seen the error message when you start your computer: invalid or damaged bootable partition? This error message indicates that your boot partition is faulty. This problem can often arise from various causes, including abrupt power outages, hardware failures, and faulty system data. Below is a real user's case:

Hi, I've used PowerISO to extract all Win 7 enterprise ISO files into a USB drive. Then I use such a USB to boot one other desktop machine. But I've got "Invalid or damaged Bootable partition" by it. - from Microsoft.

For Windows users, invalid or damaged bootable partitions can become a common cause of frustration, interfering with their smooth system startup. Thus, EaseUS will explain the underlying reasons for this issue and show you how to repair an invalid or damaged bootable partition.

How to Fix Invalid or Damaged Bootable Partition - 4 Ways

  1. Way 1. Apply Boot Repair
  2. Way 2. Change Boot Order
  3. Way 3. Repair MBR
  4. Way 4. Run Startup Repair

Are you ready to take control of your machine by exploring four efficient ways to fix the invalid or damaged bootable partition issue? Let's do it!

Way 1. Apply Boot Repair

EaseUS Partition Master Professional is one of the best methods in this article, as it is a beginner-friendly program that does not need any prior technical expertise. Because of its extensive feature set and easy-to-use interface, it will fix Windows boot issues without sacrificing data integrity. 

With the powerful "Boot Repair" feature of EaseUS Partition Master, you can easily fix several boot failures and startup issues, such as invalid or damaged bootable partitions and black/blue/white screen of death.

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So, download EaseUS Partition Master and refer to the steps given below to repair invalid or damaged bootable partitions:

Step 1. Start EaseUS Partition Master after connecting the external drive/USB to your computer, go to "Bootable Media," and click "Create bootable media."

create easeus partition master bootable disk

Step 2. Select an available USB Drive or CD/DVD and click "Create." You can also burn the Windows ISO file to the storage media.

create easeus partition master bootable disk

Step 3. Connect the created bootable drive to the new computer and reboot the computer by pressing and holding F2/Del to enter the BIOS. Then, set the WinPE bootable drive as the boot disk and press F10 to exit.

Step 4. Boot the computer again and enter the WinPE interface. Then, open EaseUS Partition Master and click "Boot Repair" under the "Toolkit" option.

open boot repair

Step 5: Select the system you want to repair and click "Repair."

click  repair

Step 6. Wait a moment, and you will receive an alert that the system has been successfully repaired. Click "OK" to complete the boot repair process.

click ok to complete the repair

Here are some other services provided by EaseUS Partition Master related to boot partitions:

The best part is that the EaseUS Partition Masters feature set extends beyond simple boot repair, providing a comprehensive solution for various disk-related issues.

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Way 2. Change Boot Order

The boot order plays a crucial role in system initialization, and deviations can sometimes be the culprit behind issues like invalid or damaged bootable partitions. So, if your system boots from an incorrect drive, it can lead to these errors. 

However, do not worry. Here are the steps to rectify this problem:

Step 1. Reboot your computer and go to BIOS setup by pressing ESC, F1, F2, F8, or F10.

BIOS setup

Step 2. Navigate to the Boot tab by using the arrow keys and pick the hard disk containing the operating system.

change and save

Step 3. Then, press the F10 key to save and exit the operation.

Changing the boot order ensures that your computer boots from the correct active disk, eliminating issues caused by incorrect or damaged boot partitions. 

Hopefully, this simple approach solves your issue. But if you are still struggling to boot into your Windows, adhere to the following method.

Way 3. Repair MBR

The Master Boot Record (MBR) is a fundamental component that contains vital information about your system partitions and the installed operating system. When the MBR gets corrupted or destroyed, the boot partition suffers significantly, resulting in crucial boot failures. 

At your rescue, EaseUS Partition Master offers a robust "Rebuild MBR" feature to handle corrupted or destroyed MBR, providing an effective solution for fixing invalid or damaged boot partitions in Windows.

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Windows 11/10/8/7100% Secure

You can follow the steps below to use its Rebuild MBR feature to fix invalid or damaged boot partitions.

Step 1. Create a WinPE bootable disk

  • Launch EaseUS Partition Master, and click "Bootable Media" on the toolbar. Select "Create bootable media".
  • Click "Next" to finish the process.
create a bootable disk

Step 2. Boot EaseUS Partition Master Bootable USB

  • Connect the bootable USB or CD/DVD to your PC. 
  • Press F2 or Del when you restart the computer to enter the BIOS screen. Set and boot your computer from "Removable Devices" or "CD-ROM Drive". And then EaseUS Partition Master will run automatically.

Step 3. Rebuild MBR

  • Click "Toolkit" and choose "Rebuild MBR".

rebuild MBR

  • Select the disk and the type of MBR. Then, click "Rebuild".
rebuild MBR
  • After that, you can see "MBR has been successfully rebuilt on Disk X".
rebuild MBR

Have you solved your problem by impeding the methods in this guideline? Use the one-click share button to pot it on your social media:


Way 4. Run Startup Repair

Windows boot problems can also be addressed by utilizing the Windows built-in Startup Repair feature. If you get an invalid or damaged bootable partition problem on Windows 10, try using Windows Bootable Media to execute Startup Repair. If you are a beginner, this method may be complex because it needs to prepare bootable media using the Windows Media Creation Tool. 

So, once you have a bootable media, follow the steps below carefully to solve the invalid or damaged bootable partition issue efficiently.

Step 1. Power off your computer and insert the Windows installation disc.

Step 2. Restart your computer and press any key.

Step 3. Specify the language, time, and keyboard settings, and click on Next.

Step 4. Choose "Repair your computer" and select "Troubleshoot."

Step 5. Now choose "Advanced Options" and select "Startup Repair."

startup repair

Step 6. Finally, select the operating system to fix and wait for the startup repair to diagnose the problem.

Startup repair can be quite effective in resolving boot failure difficulties. The primary drawback of this strategy is its complexity. As a result, if you are a newbie, you are advised to utilize EaseUS Partition Master since it will make the procedure very simple and quick.


Taking care of the invalid or damaged bootable partition issue is crucial for a trouble-free Windows experience. You explored four effective techniques, each dealing with one specific problem element.

In contrast, EaseUS Partition Master came out as a standout solution, with a user-friendly interface and extensive features to handle boot-related issues efficiently while safeguarding data integrity. Its advantages over other systems include simplicity and a user-friendly approach for beginners, making it a good choice.

Free Download 

Windows 11/10/8/7100% Secure

FAQs About Invalid or Damaged Bootable Partition

Do you have further questions related to an invalid or damaged bootable partition? If yes, please refer to the FAQs below to clear any doubts further.

1. How can I fix a corrupted boot partition?

Here are the go-for steps:

Step 1. Restart and boot the computer into safe mode.

Step 2. Now run the automatic repair.

Step 3. Access the command prompt and enter "chkdsk/f C:" (replace C with your drive).

2. How do you fix an invalid partition table error in a Dell computer?

Follow these steps to fix the invalid partition table error in the Dell computer:

Step 1. Insert the Windows installation media.

Step 2. Restart your device and enter BIOS settings by pressing F2.

Step 3. Navigate to "Boot" or "Boot Sequence" and select the option "Boot priority/order."

Step 4. Change the boot order to prioritize Windows installation media and save changes.

3. What causes an invalid or damaged bootable partition?

Problems like power outages, hardware failures, corrupt files, and software conflicts can cause invalid or damaged bootable partitions.

How Can We Help You

About the Author

Updated by Roxanne

Roxanne is one of the main contributors to EaseUS and has created over 200 posts that help users solve multiple issues and failures on digital devices like PCs, Mobile phones, tablets, and Macs. She loves to share ideas with people of the same interests.

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  • It won't hot image your drives or align them, but since it's coupled with a partition manager, it allows you do perform many tasks at once, instead of just cloning drives. You can move partitions around, resize them, defragment, and more, along with the other tools you'd expect from a cloning tool.

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