How Do I Repair My Boot Using Command Prompt Windows 10

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Summary

When y'all utilize the Recovery Environment (Windows RE) to troubleshoot startup bug, first try the Startup Repair pick in the Organization Recovery Options dialog box. If this does not resolve the effect, or if yous have to manually troubleshoot additional issues, use the Bootrec.exe tool. This article talks almost how to use the Bootrec.exe tool in the Windows RE to troubleshoot and repair the following items in Windows Vista or Windows 7:

• A chief boot record (MBR)

• A boot sector

• A Kicking Configuration Information (BCD) shop

You can besides use the Bootrec.exe tool to troubleshoot a Windows Kick Configuration Data file is missing required information error.

How to run the Bootrec.exe tool

To run the Bootrec.exe tool, first starting time the Windows RE:

1. Put the Windows Vista or Windows 7 media in the DVD drive, and then start the computer.

2. Press a fundamental when you lot are prompted.

3. Select a language, a time, a currency, a keyboard, or an input method, and and so click Next.

4. Click Repair your calculator.

5. Select the operating system that you want to repair, and then click Side by side.

6. In the System Recovery Options dialog box, click Command Prompt.

7. Type Bootrec.exe, and and then press Enter.

 Note To start the estimator from the Windows Vista or Windows 7 DVD, the computer must exist configured to kickoff from the DVD drive. For information about how to practise this, encounter the documentation that was included with the estimator, or contact the estimator manufacturer.

The Bootrec.exe tool supports the following options. Utilise the option that'south appropriate for your situation.

/FixMbr

This option writes a Windows 7 or Windows Vista-compatible MBR to the system partition. It does not overwrite the existing division table. Use this option when you must resolve MBR corruption issues, or when you take to remove nonstandard code from the MBR.

/FixBoot

This option writes a new kick sector to the organisation sectionalisation past using a boot sector that's compatible with Windows Vista or Windows 7. Utilise this option if one of the following atmospheric condition is true:

• The boot sector was replaced with a nonstandard Windows Vista or Windows seven kicking sector.

• The kick sector is damaged.

• An earlier Windows operating system was installed after Windows Vista or Windows 7 was installed. In this state of affairs, the computer starts past using Windows NT Loader (NTLDR) instead of Windows Boot Manager (Bootmgr.exe).

/ScanOs

This choice scans all disks for installations that are compatible with Windows Vista or Windows 7. Information technology also displays the entries that are currently not in the BCD store. Employ this option when there are Windows Vista or Windows 7 installations that the Boot Manager menu does non list.

/RebuildBcd

This option scans all disks for installations that are compatible with Windows Vista or Windows vii. Additionally, information technology lets you select the installations that you desire to add to the BCD store. Use this option when you must completely rebuild the BCD store.

  Note Use the Bootrec.exe tool to troubleshoot a "Bootmgr Is Missing" mistake. If rebuilding the BCD store doesn't resolve the startup issue, you lot can export and delete the BCD shop and so run this option again. By doing this, you brand sure that the BCD store is completely rebuilt.

To do this, type the following commands at the Windows RE control prompt:

• bcdedit /export C:\BCD_Backup

• c:

• cd kick

• attrib bcd -s -h -r

• ren c:\boot\bcd bcd.old

• bootrec /RebuildBcd

Need more assistance?

Source: https://support.microsoft.com/en-us/topic/use-bootrec-exe-in-the-windows-re-to-troubleshoot-startup-issues-902ebb04-daa3-4f90-579f-0fbf51f7dd5d

Posted by: wyckoffspable.blogspot.com

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