FIX: Damaged External Hard Drive In The Boot Sector

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    Over the past week, some of our users have informed us that they have encountered a damaged hard drive with an external boot sector.

    MBR On Damaged External Disk

    How do I fix MBR corruption on external hard drive?

    Connect an external drive to your PC.Right click on the external hard drive and select “Repair MBR”.Select the type of all MBRs for your current businesseu systems.Click Apply, then click Continue to complete the pending operations.

    “I created a 1TB hard drive as an external hard drive in a custom Windows 10. I noticed that it doesn’t show up in Windows Explorer this morning. I also read it in Disk Management where it acts like unallocated space. I will not create or format a new section at this interval. I then check it with a third party scan method and it shows that the MBR of my external drive is corrupted and therefore in need of repair. What does this mean? How to fix MBR on external drive €

    Google on the internet, you may find that many people report that the MBR of external drives gets damaged or damaged impulsively for no reason. Which MBR of the hard drive also caused the damage?

    What You Want To Know About MBR

    The Master Boot Record (MBR) contains the hard disk partition table and a small piece of code that can be run each time the boot is started, euwhether it is a new boot disk. MBR is installed when the first hard disk partition is created and is always located in the first sector of the hard disk.

    corrupted boot sector external hard drive

    If you get a corrupted MBR on your internal hard drive, Windows won’t have access to that use and the system won’t boot. The errors “Operation of type” System not found “,” Invalid partition table “and” No operating system “are displayed.

    If the MBR of the external USB drive or hard drive is damaged, it will be difficult to access the existing partition because the hard drive and partition space of that hard drive will be damaged. Thus, the data on this disk will actually be lost and you will not be able to use the disk for any new purposes.

    Possible Reasons For The Damaged MBR Of The External Disk

    Regardless of whether information technology is used for the internal hard drive and the external hard drive, the reasons for MBR failure seem to be the same. In general, there are three main possible causes of write corruption when starting up an external hard drive.

    • VirusnaI’m an infection. Whenever viruses are loaded onto the hard drive, the main target that a virus is most likely to infect is the MBR sector. If the MBR is closed, no data can be received along this path.

    • MBR overwritten. Some tutorials may accidentally overwrite a portion of a specific MBR when installing from an external drive.

    • Hard disk failure. A bad hard disk cluster can make the MBR unreadable.

    Other actions, such as shutting down the computer under control without disconnecting a third-party drive, also wreak havoc on the MBR sector. The MBR of a car’s external hard drive can be damaged, but it is also easy to repair. You can create options to repair the MBR of a Surface Disk in Windows 7, Windows 10 and Windows 11.

    How To Recover MBR Of External Hard Drive Effectively In Windows 7/10/11?

    How do I fix bad sectors on my external hard drive?

    Double click Computer, find the specific external hard drive you want to recover, right click it and use Properties.In the Properties window, click Tools> Check Now ….After that, a window will open in which you will need to check the box “Find several and try to restore dangerous sectors.”

    In the following sections, you will learn how to fix MBR when external effort is unavailable using three methods. Choose the one that suits you.

    Note. All data transferred to the external hard drive may be lost. If you need to restore required filesData from external hard drive, please refer to dedicated software for data recovery.

    Recover The MBR Associated With The External Drive Using The Windows Installation CD

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  • If you have a Windows installation DVD, you can easily repair the MBR of the disk.

    1. Connect your external hard drive to your computer frequently. Turn off your computer and enter the installation CD. I often boot from disk.

    3. For this step, click on “Repair to a Better Computer” in the lower left corner.

    4. Press Shift + F10 to open a command prompt.

    5. At each prompt, enter the drive letter associated with your external hard drive partition, bow F :, followed by a colon and press Enter.

    6. Enter these commands here and press Enter in turn.

    • If Windows crashes to the internal hard drive, you need to set the boot priority on the installation CD via BIOS.

    â – ª If the Shift + F10 formula does not work, try installing a disk. In Windows 10, select option> Troubleshoot> Command Prompt; Windows 7, Next> System Recovery Options> Com Nnd line.

    Recovering MBR On An External Hard Drive Using Advanced Options

    If you have not purchased a Windows installation or update CD, you can try this method to get to the command prompt.

    If you are using Windows 10: Go to Settings> Update & Security> Recovery> Restart Now> Choose the appropriate option> Advanced Troubleshooting> Answers> Command Prompt.

    If you are using Windows 7: restart your computer and keep pressing F8 to automatically access the repair hole. And then go to Repair Your Amazing Computer> Troubleshoot> Advanced Alternative Command> Command Prompt.

    Then quickly follow step 5 to create a series of steps from the above method to recover the external MBR from Get Hard.

    The Easiest Way To Recover MBR Directly To External USB Drive

    If you are developing a Windows drive, you can repair the MBR via an external USB hard drive if you continue. However, you may find that, in some cases, the bootrec / fixmbr command may return “Access Denied”, “File not found”, “I / O device error” or “Item not found” return errors.

    How do you fix a boot sector on a hard drive?

    Boot from all original installation DVDs (or recovery USB stick).From the main screen, click “Repair your computer”.Select Troubleshoot.Select Command Prompt.When the actual command line is loaded following the command type: bootrec / FixMbr bootrec / FixBoot bootrec / ScanOs bootrec / RebuildBcd.

    In addition, the two steps shown here are for advanced line management and may not be suitable for all users. So it’s a good idea to look into this solution. Rating

    aomei Assistant Standard is a free partition manager that allows you to recover MBR partition table for external drive in a graphical user interface (GUI). Windows 7/8/10 // 11XP / Vista are duplicated. Important: this is all you need if you want to restart your computer to perform MBR recovery. Download this free software and give it a try.

    • Step-by-step recovery of damaged MBR on external disk

    corrupted boot sector external hard drive

    1. Connect the external drive to your computer. Install and run AOMEI Partition Assistant.

    3. Select the MBR type for the current optimal operating system.

    How fix bad sectors on external hard drive without formatting?

    Press Windows Key + S and find Command Prompt.Type CHKDSK E: / F / R / X and press Enter (replace “E:” with your drive letter).When the scan type is complete, you will see a screen on the right showing how many dilemmas have been found and resolved.

    4. Click Apply and then click Next to complete the pending operations.

    5. Click Yes on the chat confirmation pop-up and wait for the process to complete.

    • If you want to repair MBR without starting Windows, Launching and Repairing Software in WinPE mode allows customers to create bootable media.
    • If you want to restore the MBR on a node, you can use AOMEI Partition Assistant Server.


    Don’t worry if the MBR of your external USB drive or hard drive is damaged. You can rebuild the MBR for external creation using Windows Setup Disk, Windows Advanced Options, or the Professional Partition Table Rebuild Tool.

    As you can see from our screenshots, AOMEI Partition Assistant is also an expert assistant in solving other problems. For example, you can make sure the hard drive is healthy after updating the MBR to an external drive for errors. For advanced features such as Internet operations, upgrade to AOMEI Assistant Partition Professional.

    Click here to get this software that will optimize your PC for you.

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