If the fixmbr command detects an invalid or non-standard partition table signature, the fixmbr command prompts you for permission before rewriting the MBR. We also recommend that you backup your data before you use this command. We recommend that you run antivirus software before you use this command. If you use this command, you may create inaccessible partitions. Warning This command can damage your partition table if a virus is present or if a hardware problem exists. Use the fixmbr command in the Windows XP Recovery Console to repair the MBR of the startup partition. You may have to replace the hard disk.įor 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:Ħ5416 Hardware and software vendor contact information, A-KĦ0781 Hardware and software vendor contact information, L-PĦ0782 Hardware and software vendor contact information, Q-Z Method 2: Use Recovery Console Contact the hardware manufacturer to inquire about how to resolve this issue. ![]() If the issue is not resolved, or if the computer's BIOS cannot detect the hard disk, you may have issues with your hardware. See the computer documentation or contact the hardware manufacturer for information about how to verify the BIOS settings.Īfter you verify that the computer's BIOS detects the hard disk, restart the computer, and then test to determine whether the issue is resolved. Verify the computer's BIOS settings to make sure that BIOS lists and recognizes the hard disk. For information about how to contact Microsoft support, visit the following Microsoft Web site: If you are not comfortable with advanced troubleshooting, you might want to ask someone for help or contact support. This section is intended for advanced computer users. If a fix or workaround is not available, you can use the "Advanced Troubleshooting" section to try to resolve this issue. Sometimes this means that your only solution is to replace your hard disk. However, be aware that the damage to your hard disk may be serious. 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. Your best bet may be to contact the manufacturer of your computer or your hard disk. To resolve this issue, use one of the following methods, depending on your situation. Note Some third-party programs or disk corruption can damage an MBR.Īn incompatible partition is marked as Active.Ī partition that contains the MBR is no longer active. Sector 0 of the physical hard disk drive has an incorrect or malformed master boot record (MBR). ![]() ![]() The basic input/output system (BIOS) does not detect the hard disk. This issue may occur if one or more of the following conditions are true: Setup did not find any hard drives installed on your computer.
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