How do I fix MBR error 1

How to Fix Master Boot Record in Windows 10

The Master Boot Record (MBR) is a special boot sector at the beginning of your system partition. The MBR informs the startup process of what should follow, e.g. B. partition layouts, sizes, file systems, etc. An MBR usually also contains a small executable code that forwards the startup process to the actual operating system and lands you in Windows.

Unfortunately, the MBR is not infallible. It can get corrupted, damaged, or just go away due to various reasons. This makes Windows 10 installations prone to errors. How to fix a corrupted Windows 10 installation. How to fix a corrupted Windows 10 installation. System corruption is the worst thing that could happen to your Windows installation. We'll show you how to get Windows 10 back on track if you're suffering from BSODs, driver errors, or other inexplicable issues. Continue reading . Fortunately, there are several ways to fix the master boot record in Windows 10.

Causes of startup errors in Windows 10

How do you know when your MBR is down? Partition Tables: What Mistakes Mean and How To Avoid Them Partition Tables: What Mistakes Means and How to Avoid Them If you are a computer hobbyist, you have likely received this dreaded message: "Invalid Partition Table". But why is this happening and how can you avoid it in the future? MORE INFORMATION There is a very good chance that your system will not start in Windows. Instead, a screen appears with an error message “Missing operating system,” “MBR error,” “Error loading operating system,” “Invalid partition table,” or something similar.

Damage to the master boot record can occur for a variety of reasons. Drive failure and damage are a very common cause. In the past few years, some flavors of ransomware have attacked the master boot record. Will The Petya Ransomware Crack Bring Back Your Files? Will The Petya Ransomware Crack bring your files back? A new variant of ransomware, Petya, has been cracked by an angry victim. This is a chance to deal with the cyber criminals as we will show you how to unlock your released data. Read More Fortunately, this ransomware practice is rare, although numerous other malware examples modify the MBR directly to cause maximum damage and irritation.

That said, there are several effective ways to repair the Windows Master Boot Kit. If one fix doesn't work for your system, try the next.

1. Startup Repair via Windows Automatic Repair

When you first start your Windows 10 system, it should detect a problem and go into automatic repair mode. The screen reads Your PC did not start properly. Choose from here Advanced options> Troubleshooting> Startup Repair.

The Windows 10 Startup Repair Tool is fully automated. However, it will take a long time to complete, but it should fix your Windows 10 MBR issues.

2. Command prompt via Windows Automatic Repair

If the Windows 10 Startup Repair process doesn't fix your MBR problem, or you prefer a faster, more direct approach To repair your system, you can use Command Prompt through Automatic Repair. If your system encounters a problem and the Automatic Repair screen appears, select Advanced options> Troubleshoot> Command Prompt.

You will use the Bootrec.exe tool to repair the corrupted MBR. Bootrec has a number of commands that can be used to restore the startup process after problems and is already included with your Windows 10 system as part of the basic installation.

Art bootrec.exe / fixmbr and press Enter. Then tap bootrec.exe / fixboot and press Enter. You should see that The operation completed successfully under each command. If you don't see the completion message and you get an error instead, enter bootrec.exe / rebuildbcd and press Enter. The "rebuildbcd" command attempts to rebuild your system's Boot Configuration Data (BCD).

Unfortunately, that doesn't always work the first time. In this case, Microsoft suggests exporting the BCD storage (the place where your startup data is stored) and recreating it from scratch. Sounds scary, but only lasts a brief moment.

Enter the following commands one by one:

The export and restore process should completely fix your MBR problems.

Users who are still using Windows 7 or an earlier version can also use the bootrec.exe / scanos Command. This command looks for old BCD settings and repairs them.

If you can't access Command Prompt through Automatic Repair

Some users will find that Windows 10 Automatic Repair does not show up when they want it. In this situation, you will need to use your Windows installation media to boot into repair mode.

If you don't have your Windows installation media on hand, you'll need to find a working Windows system that will allow you to create the media. How To Create Windows 10 Installation Media How To Create Windows 10 Installation Media Regardless of how you got it, Windows 10 lets you create your own installation media. Sooner or later, you might need it. Let them show you how to prepare. Continue reading .

However, there is one more workaround you can try if you don't have a Windows installation USB drive or CD. You can give your system the appearance of a startup failure by turning it on and then turning it off again when the Windows logo appears.

After repeating this process three times in quick succession, the automatic repair will trigger. Please note that this is not suitable for all users depending on the system status.

3. Fix MBR issues in Windows with GParted Live

GParted Live is a bootable Linux distribution with a focus on partition management. However, you can also work on your Windows partitions. How To Manage Hard Disk Drives And Volumes In Windows 10 How To Manage Hard Disk Drive Partitions And Volumes In Windows 10 Is Windows Slow And Running Out Of Space? Or do you want to reallocate space? We'll show you how to use Windows 10's partition manager. Read More To complete this part of the tutorial you will need a working alternative system.

Download GParted Live

First of all, you need to download GParted Live. There are two versions. If you have a 32-bit system, choose this i686.iso Execution. This version works on both 32- and 64-bit systems, but with some restrictions. If you have a 64-bit system (and you are sure it's a 64-bit system!) Download this amd64.iso Execution.

Write GParted Live to bootable media

Next, you need to write the disc image to some type of bootable media. I'm using an 8GB USB flash drive, but a smaller drive will work as well as a suitable disc. You'll also need to download UNetbootin. Open UNetbootin. Choose Disk image Then click the three-dot icon at the bottom of the control panel to navigate to the GParted Live ISO.

Select the ISO and press Open. Then select the USB flash drive you want to write GParted Live to and press OK. Then remove the bootable media and shut down your system.

Boot into GParted Live

Insert the GParted Live bootable media with a corrupted MBR into the system. Turn on the system and press the boot process shortcut key for your system to bring up the boot device selection menu (e.g. F11 on my PC and laptop). You should recognize the GParted Live media as a possible bootable source. Select it and let the media load. You have to make a few minor choices, such as: B. Language and operating mode.

Using GParted Live and TestDisk to freeze the MBR

After the GParted Live environment loads, open a terminal window and enter the following sudo fdisk -l and press Enter. This command lists all drives and partitions that are currently available in your system. Now open a new terminal window, enter Test disk, then select No protocol.

Next, you will be asked which hard drive you want to repair. Select your drive and continue.

Now select the type of partition table. In this case, choose Intel / PC partitionand press Enter.

Choose Analyze, then Fast Search.

TestDisk searches your drive for existing and previously deleted partitions. The scanning process may take a few minutes depending on the size of the drive. Your primary system partition may be identified. It looks a little confusing, but you want GParted Live to list all of your system partitions.

We are looking for the partition with a "*“-This is yours Primary bootable partition and that's where the corrupt MBR lurks. If the scan does not show all partitions, select Deeper search. GParted also provides a short list of information in case any errors occur.

If all of your partitions are shown with the correct flags (like bootable, extended, logical) then (and only then!) Write to the partition table. If the markings are incorrect, use the arrow keys to toggle them. In the following screenshots, for example, the first image shows a drive with a double second partition ([Partition 2]). Scroll through the partition and press P. Displays the files found on this partition.

The first duplicate partition is bad, as seen from the File system cannot be opened. File system appears to be damaged Embassy.

The second duplicate partition contains the list of file folders and is therefore the correct partition.

The flag for the first duplicate partition is then set to D. for delete while the second duplicate partition is set to L. for Logical: Restoring the partition and its data on the drive.

When you return to the TestDisk menu, select MBR code write a standard MBR to the hard disk and confirm.

Angry! You are done. You can close the terminal windows, log out of GParted Live, and shut down the system. Remove the GParted Live boot media and reboot the system.

4. Fix MBR problems in Windows using the Boot Repair Disk

Boot Repair Disk is another extremely handy Linux distribution that you can use to repair Windows. The PC repair toolkit in your pocket: boot CD on a USB stick The PC repair toolkit in your pocket: boot CD on a USB stick In my toolkit for technicians I keep a USB flash drive with the most amazing Tools of the world: My PC repair kit. In this article I share the content. Read More In fact, the Boot Repair Disk only contains a copy of GParted. However, it simplifies the MBR recovery process in a single program with easy toggle boxes.

First, download the 64-bit or 32-bit version of the Boot Repair Disk depending on your system. Like the GParted live image, the 32-bit version only works with 32-bit systems, while the 64-bit version works with both.

Write the Boot Repair Disk to the bootable media

Next, you need to write the disc image to some type of bootable media. I'm using an 8GB USB flash drive, but a smaller drive will work as well as a suitable disc. You'll also need to download UNetbootin.

Open UNetbootin. Choose Disk image Then click the three dots icon at the bottom of the control panel to switch to the Boot Repair Disk ISO.

Select the ISO and press Open. Then select the USB flash drive that you also want to write as Boot Repair Disk and press OK. Then remove the bootable media and shut down your system.

Boot into the Boot Repair Disk

Insert your Boot Repair Disk volume into the system with a corrupted MBR. Turn on the system and press the boot process shortcut key for your system to bring up the boot device selection menu (e.g. F11 on my PC and laptop). You should recognize the Boot Repair Disk USB flash drive or boot disk as a possible bootable source. Select it and let the media load.

Use Boot Repair Disc to repair the MBR

With the Boot Repair Disk environment loaded (Boot Repair Disk uses the lightweight Lubuntu environment), select the option LXTerminal from the system tray. Art fdisk -l and press Enter to list your current drives and partitions.

Next, choose the B. Logo at the bottom right (where the Windows Start menu is located) and go to System Tools> Boot Repair. The program will search your system, then you can choose an automatic repair session or view the advanced options. First, try the Automatic Repair option. Automatic repair fixes most boot problems instantly.

If that doesn't work, open advanced options and go to MBR options Tab. Find your Windows boot partitions by referring to the list of drives and partitions in the LXTerminal session you created earlier. Boot Repair Disk marks them a little more clearly than the basic GParted Live commands! When you are sure, press Apply, Then restart your system.

5. Fix MBR problems with EaseUS Partition Master

This final fix requires you to remove the physical drive from the affected system. After removing the drive, you can connect it to another system and use EaseUS Partition Master to repair the MBR. The Best Free Windows Partition Manager For Your Needs The Best Free Windows Partition Manager For Your Needs Partition managers are an essential part of PC maintenance. Leave at least one Windows partition manager installed! We recommend these six free tools. Continue reading .

Download and install the EaseUS Partition Master. Then connect the drive. Select the external drive. (It will have one MBR Label.) Right-click the drive label, then select Rebuild MBR. Go to the top right corner and press Apply, Then let the process complete. Remove the drive, reinstall it in the original system, and restart the computer.

Windows 10 Master Boot Record Repair complete!

These five options represent the best and fastest methods of repairing a corrupted or damaged Windows 10 MBR. Better still, many of these fixes work with older versions of Windows (especially sections two and three). Just remember to take your time and work your way through each Windows fix black screen at boot. Here is how to fix black screen on boot? How to Fix It Black screen booting is bad news. We are going to show you how to fix and diagnose this problem in Windows 10. Additional Information .

For more information on MBRs, see our Comparison of MBR and GPT for an SSD MBR vs.GPT: Which One Is Best for Your SSD? MBR vs. GPT: Which is Best for Your SSD? Wondering how MBR compares to GPT? We share the facts of the MBR vs. GPT discussion to find out which is best for your SSD. Continue reading .

Learn more about: Startup Errors, Startup Screen, Computer Maintenance, Troubleshooting, Windows 10.