When you start your computer to the Recovery Console to recover functionality, you may receive an error message that resembles the following error message:. Sector 0 of the physical hard disk drive has an incorrect or malformed master boot record MBR. Note Some third-party programs or disk corruption can damage an MBR. Your best bet may be to contact the manufacturer of your computer or your hard disk. The manufacturer may have a utility that you can use to perform a more detailed scan for damaged areas of the disk and help verify the correct BIOS settings.
However, be aware that the damage to your hard disk may be serious. Sometimes this means that your only solution is to replace your hard disk. If a fix or workaround is not available, you can use the "Advanced Troubleshooting" section to try to resolve this issue.
This section is intended for advanced computer users. If you are not comfortable with advanced troubleshooting, you might want to ask someone for help or contact support.
For information about how to contact Microsoft support, visit the following Microsoft Web site:. See the computer documentation or contact the hardware manufacturer for information about how to verify the BIOS settings.
After you verify that the computer's BIOS detects the hard disk, restart the computer, and then test to determine whether the issue is resolved. If the issue is not resolved, or if the computer's BIOS cannot detect the hard disk, you may have issues with your hardware. Contact the hardware manufacturer to inquire about how to resolve this issue. You may have to replace the hard disk. For information about how to contact hardware manufacturers, click the appropriate article number in the following list to view the article in the Microsoft Knowledge Base:.
Warning This command can damage your partition table if a virus is present or if a hardware problem exists. If you use this command, you may create inaccessible partitions. We recommend that you run antivirus software before you use this command.
We also recommend that you backup your data before you use this command. If the fixmbr command detects an invalid or non-standard partition table signature, the fixmbr command prompts you for permission before rewriting the MBR.
The fixmbr command is supported only on xbased computers. For more information about Recovery Console, click the following article numbers to view the articles in the Microsoft Knowledge Base:.
If you prefer an easier and safer way to rebuild or repair the MBR disk, you may apply third-party partition magic software - EaseUS Partition Master to perform an automatic repair. On top of that, some brands provide customers with inbuilt tools to deal with MBR issues. If the system partition or boot partition is not set to active, you may encounter the operating system not found issue.
Step 1. Run EaseUS partition manager software. On the disk map, right-click the traget partition and choose "Advanced". Step 2. Then, select "Set Active" from the drop-down menu. The software will automatically execute the operation and create an active partition for you. All effective solutions to the "Missing Operating System" or "Operating system not found" error are carefully presented on this page.
You may try any one of the methods to resolve the issue and get a healthy Windows system back and continue using your computer again. Gemma is member of EaseUS team and has been committed to creating valuable content in fields about file recovery, partition management, and data backup etc for many years.
She loves to help users solve various types of computer related issues. Daisy is the Senior editor of the writing team for EaseUS.
She has been working in EaseUS for over ten years, starting from a technical writer to a team leader of the content group. As a professional author for over 10 years, she writes a lot to help people overcome their tech troubles. It makes it way easier to play out what will happen after you've made all the changes. I also think the overall look and feel of EaseUS Partition Master Free makes whatever you're doing with your computer's partitions easy. Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more.
A premium upgrade adds free tech support and the ability to resize dynamic volumes. 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. Your Guide Is Here. Let it manage your storage drive: resize, format, delete, clone, convert, etc. Screen Recorder. Transfer Products. File Management. More Products. Workable Solutions Step-by-step Troubleshooting Fix 1.
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