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Home  ›  How To Remove Windows 7 And Install Xp

How To Remove Windows 7 And Install Xp

Written By Monday, March 28, 2022 Add Comment Edit

This guide shows you how to gear up the Master boot tape (MBR) in whatever of the Windows versions: Windows ten, Windows 11, Windows XP, Vista, 7, or Windows 8.

Contents

  • one What is the MBR
    • one.ane Backup
    • 1.2 Restore
    • one.iii Mutual errors
  • 2 Fix the MBR with Easy Recovery Essentials
  • 3 Fix the MBR in Windows XP
  • 4 Gear up the MBR in Windows Vista
  • five Set the MBR in Windows 7
  • half dozen Fix the MBR in Windows 8 or 8.1
  • 7 Fix the MBR in Windows 10
  • 8 More than Data
    • viii.1 Support Links
    • 8.ii Applicable Systems

What is the MBR

The MBR (stands for "Master boot record") is a kick sector (a region of your hard disk) that holds information well-nigh the partitions of your hard bulldoze and acts as a loader for the operating system you're running.

The Main boot tape is created when you commencement install Windows, on the first partition y'all create. It'due south the get-go 512 bytes of your hd.

If the MBR is damaged, you lot won't be able to boot into Windows. All Windows versions – Windows XP, Vista, 7 or 8 – use MBR and, if damaged you lot won't be able to boot.

It can be damaged by certain viruses that target the MBR to supersede information technology with their own lawmaking or in cases when yous dual boot with a Linux distribution (see Error: no such partition. Chow rescue article).

Fill-in

Yous can backup the MBR since it's stored on the hard disk drive and yous restore information technology after, when needed.

Yous only demand one command to backup the MBR:

dd if=/dev/sda of=/path-to-salve/mbr-backup bs=512 count=one

In the higher up command, /path-to-relieve/mbr-backup is the path where yous want to salve mbr-backup.

Restore

Of import: Restoring your Master boot record with the wrong partition tabular array will brand your data unreadable and will make it very hard to recover your data subsequently.

You can restore the saved Primary kick record using this command:

dd if=/path-to-become/mbr-backup of=/dev/sda bs=512 count=i

In this command, /path-to-get/mbr-backup is the path where you have the mbr-fill-in stored.

Common errors

If the Principal kick record is broken, your computer may show some of the following errors:

  • Error loading operating arrangement (see our Error loading operating organization: Gear up for Windows XP, Vista, 7, 8, 10 guide)

The "Error loading operating system" error

The "Error loading operating arrangement" error

  • Operating Organisation not found(run across our Operating System not found or missing: Fix for Windows XP, Vista, vii, viii, 10 guide)

The "Operating system not found" error

The "Operating system not found" mistake

  • Invalid sectionalization table(encounter our Invalid partition tabular array: Set up for Windows XP, Vista, vii, eight, 8.1 and 10 guide)

The "Invalid partition table" error

The "Invalid partition table" error

  • No bootable medium found(see our No bootable medium establish: Fix for Windows XP, Vista, vii, 8, 8.ane and ten guide)

The "No bootable medium found" error

The "No bootable medium found" error

  • Reboot and select proper boot device(come across our Reboot and select proper boot device: Fix for Windows XP, Vista, 7, 8 and 10 guide)

The Reboot and Select proper boot device error

The Reboot and Select proper boot device fault

Other errors can be shown, depending on many factors, that are caused by a damaged boot record.

Ready the MBR with Easy Recovery Essentials

Piece of cake Recovery Essentials, our bootable recovery and repair CD/USB, is guaranteed to repair most damages done to the Primary boot tape (MBR) using its Automated Repair characteristic for Windows XP, Vista, 7 or 8:

  1. Download Like shooting fish in a barrel Recovery Essentials. Choose your Windows version (XP, Vista, vii or eight) before downloading.
  2. Burn down the image. Follow these instructions on how to burn the bootable ISO image very advisedly, as making a bootable CD tin be tricky!
  3. Kicking Easy Recovery Essentials
  4. Choose Automated Repair choice and click Continue

    Easy Recovery Essentials

    Cull "Automated Repair" in Easy Recovery Essentials

  5. Choose your Windows installation drive's letter (usually information technology's C:\) and click on Automated Repair
  6. Easy Recovery Essentials volition now begin

    Easy Recovery Essentials

    Easy Recovery Essentials Starts the Process

  7. Once the procedure is consummate, click Restart
  8. Washed. Windows XP, Windows Vista, Windows 7 or Windows eight should properly load now.

    Windows XP, Vista, 7, 8 Boot Screens

    Windows XP, Vista, 7, 8 Loading Successfully

Yous can download Easy Recovery Essentials from here.

Ready the MBR in Windows XP

Windows XP users tin can use the fixmbr command to repair the MBR. You need the original Windows XP installation CD to run Recovery Console and run the fixmbr utility.

If you don't have the Windows XP installation CD to run Recovery Panel, go to Fix MBR with Piece of cake Recovery Essentials.

The fixmbr command is only available for Windows XP and Windows 2000.

The instructions to run fixmbr are:

  1. Boot from the Windows XP CD
  2. At the "Press any central to boot from CD…" bulletin, press any key to boot into the CD
  3. When the Welcome to Setup screen appears, press R to open Recovery Console

    Windows XP Press R for Recovery Console

    Windows XP Press R for Recovery Console

  4. At the "Which Windows installation would you like to log onto" question, type 1 and hit Enter, if your Windows XP is the only operating system on your hard drive
  5. At the "Type the Administrator password" question, enter the password and hit Enter afterwards
  6. Type fixmbr

    The fixmbr in Command Prompt

    The fixmbr in Command Prompt

    If the "Are y'all sure you desire to write a new MBR?" message appears, press Y and hitting Enter

  7. Printing Enter
  8. Wait for the process to finish. The fixmbr utility software will repair any impairment to the principal boot tape.
  9. Remove the Windows XP CD
  10. Blazon get out
  11. Press Enter to restart your calculator

If you lot weren't able to kicking your calculator because of a damaged MBR, the higher up instructions should fix it and your Windows XP should start normally.

If the fixmbr command doesn't work, attempt using the map command to get the correct drive proper name where y'all desire to repair the Master boot record:

  1. Type map
  2. Hit Enter
  3. Await for the output of the map utility: 
    C: NTFS 1024MB \Device\Harddisk0\Partition1 Eastward: \Device\CdRom0

    The above output is an example. The output for your computer can be different, merely notation the drive letter for the item with Harddisk0, in this case C:\.

Set the MBR in Windows Vista

Windows Vista uses a different utility to fix the MBR than XP does, the bootrec command.

You need your original Windows Vista installation CD/DVD to run the bootrec utility.

If you don't accept the Windows Vista installation CD/DVD to run Command Prompt, become to Set up MBR with Easy Recovery Essentials.

The instructions are:

  1. Boot from your Windows Vista installation CD or DVD
  2. Choose your language and keyboard layout
  3. At the Welcome screen, click on Repair your calculator

    Windows Vista Repair Your Computer Menu

    Windows Vista Repair Your Computer Menu

  4. Choose the operating system and click Next
  5. When the System Recovery Options window appears, click on Control Prompt
  6. When Control Prompt appears, type these commands: 
    bootrec /FixMbr bootrec /FixBoot bootrec /RebuildBcd

    You can type bootrec.exe for a total description of above commands.

  7. Press Enter after each command
  8. Expect for the functioning to finish. If it was a success, a confirmation bulletin will appear on the screen.
  9. Remove the CD/DVD from the disk tray
  10. Type leave
  11. Striking Enter and restart your reckoner

You lot can run Startup Repair for Windows Vista earlier running bootrec.exe to attempt and fix the boot error automatically. The steps to run Startup Repair are:

  1. Boot from the installation CD/DVD
  2. Click on Repair your reckoner, after you lot select the language and keyboard layout

    Windows Vista Repair Your Computer Menu

    Windows Vista Repair Your Reckoner Menu

  3. Choose your operating arrangement from the listing, click Next
  4. When the System Recovery Options dialog appears, click on Startup Repair

    Windows Vista System Recovery Options

    Windows Vista System Recovery Options

  5. Wait for the process to finish. Restart your calculator when prompted by the system

Another alternative is to completely rebuild the BCD, if the bootrec /rebuildbcd control doesn't work. When yous are at the Control Prompt, blazon the following commands:

bcdedit /export C:\bcdbackup c: cd boot attrib bcd -s -h -r ren c:\boot\bcd bcd.backup bootrec /rebuildbcd

After each command, hit Enter.

Fix the MBR in Windows 7

You demand your original Windows 7 installation DVD to boot into Organisation Recovery Options and run Command Prompt.

If you don't take the Windows seven installation CD/DVD to run Command Prompt, go to Fix MBR with Piece of cake Recovery Essentials.

The instructions are:

  1. Boot from the Windows seven installation DVD
  2. At the "Press any primal to boot from CD or DVD…", press any key to kicking from the DVD
  3. Select a language
  4. Select a keyboard layout
  5. Click Next
  6. Select the operating arrangement and click Next. The "Utilize recovery tools that can help prepare problems starting Windows" must exist checked when you select the operating organization.
  7. At the System Recovery Options screen, click on Command Prompt

    Windows 7 System Recovery Options Screen

    Windows 7 System Recovery Options Screen

  8. When Control Prompt successfully loads, type this command: 
    bootrec /rebuildbcd
  9. Printing Enter
  10. Type the next command: 
    bootrec /fixmbr
  11. Press Enter
  12. Type the next command: 
    bootrec /fixboot
  13. Press Enter
  14. Remove the installation DVD from the disk tray and restart your computer

If bootrec /fixmbr and bootrec /fixboot doesn't work, endeavor restoring the boot sector code of your Windows 7:

  1. Determine the drive letter of your Windows installation CD/DVD by typing these commands in the Command Prompt: 
    diskpart select disk 0 listing volume
  2. Look for the "CD-ROM" word in a "Type" column. This particular is your CD/DVD installation drive letter. If the drive letter of the alphabet is D:\, type these commands: 
    leave D: cd boot dir

    If the bulldoze letter is different than D:\, replace the second command with the drive letter you have noted from the previous list book control.

  3. Type this control: 
    bootsect /nt60 SYS /mbr
  4. Press Enter
  5. Remove the CD/DVD from the disk tray
  6. Type exit
  7. Printing Enter to restart your computer

Gear up the MBR in Windows 8 or 8.1

You need the original Windows eight or viii.one installation DVD to repair the Master boot record.

If you don't have the Windows 8/8.i installation CD/DVD to run Control Prompt, become to Fix MBR with Like shooting fish in a barrel Recovery Essentials.

The instructions are:

  1. Boot from the original installation DVD (or the recovery USB)
  2. At the Welcome screen, click Repair your computer

    Windows 8 Repair Your Computer Menu

    Windows 8 Repair Your Computer Menu

  3. Choose Troubleshoot
  4. Choose Control Prompt
  5. When the Command Prompt loads, type the following commands: 
    bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd
  6. Press Enter after each control and await for each operation to end
  7. Remove the DVD from the disk tray
  8. Type exit
  9. Hit Enter
  10. Restart your computer and check if Windows 8/eight.i can now boot

If bootrec utility doesn't gear up your Windows 8/viii.one, try following the next commands to fix the EFI bootloader of the Windows 8/8.1:

  1. Boot from the installation DVD or the Windows 8 or Windows 8.1 recovery USB
  2. Click Repair your computer
  3. Choose Troubleshoot
  4. Choose Command Prompt
  5. Type these commands in order and hit Enter after each: 
    diskpart sel disk 0 list vol

    These commands will select the commencement deejay of your figurer and the list all the partitions available on that disk.

  6. Check for the volume detail that has the Fs column FAT32. The EFI partition must be formatted under FAT32. If the volume number of EFI partitioning is "2", type the following command: 
    sel vol ii

    If the volume number is different than 2, replace "two" with the number available on your estimator.

  7. Assign a letter to this partition, a letter that is dissimilar that those already available on your computer, for example ten:\. Blazon this control to assign the alphabetic character: 
    assign letter=x:
  8. Expect for the success message to appear: 
    DiskPart successfully assigned the drive letter of the alphabet or mount bespeak.
  9. Type go out to quit the DiskPart utility: 
    get out
  10. Blazon this command and supersede 10:\ with the letter you assigned earlier to the EFI division: 
    cd /d x:\EFI\Microsoft\Boot\
  11. Then blazon the bootrec command to repair the volume: 
    bootrec /fixboot
  12. Now you lot need to backup the old BCD and recreate a new one. Type: 
    ren BCD BCD.backup
  13. Blazon this command to recreate the BCD and replace the x:\ with the assigned letter earlier: 
    bcdboot c:\Windows /l en-usa /s x: /f ALL
  14. In in a higher place command, Windows is installed on c:\. If the drive letter where your Windows eight/8.1 is installed is dissimilar, replace c:\ with your drive letter.
  15. Remove the DVD from the disk tray
  16. Type leave
  17. Restart your computer

Windows 8 bootrec utility results screen

Windows 8 bootrec utility results screen

Fix the MBR in Windows 10

You demand the original Windows 10 installation DVD to repair the Master kick record.

If you don't have the Windows 10 installation DVD to run Command Prompt, become to Fix MBR with Like shooting fish in a barrel Recovery Essentials.

The instructions are:

  1. Boot from the original installation DVD (or the recovery USB)
  2. At the Welcome screen, click Repair your computer
  3. Choose Troubleshoot
  4. Choose Command Prompt
  5. When the Command Prompt loads, type the following commands: 
    bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd

    Windows 10 Repair Your Computer Menu

    Windows 10 Repair Your Computer Carte

  6. Press Enter afterward each command and wait for each functioning to finish
  7. Remove the DVD from the disk tray
  8. Type leave
  9. Hit Enter
  10. Restart your figurer and check if Windows 10 tin at present boot

If bootrec utility doesn't fix your Windows 10 installation, try following the next commands to fix the EFI bootloader:

  1. Boot from the installation DVD or the Windows 10 setup or recovery USB
  2. Click Repair your figurer
  3. Choose Troubleshoot
  4. Cull Command Prompt
  5. Type these commands in order and hitting Enter subsequently each: 
    diskpart sel disk 0 list vol

    These commands will select the offset disk of your reckoner and the list all the partitions available on that deejay.

  6. Check for the volume detail that has the Fs cavalcade FAT32. The EFI partition must be formatted under FAT32. If the book number of EFI partition is "2", type the following command: 
    sel vol 2

    If the volume number is unlike than ii, replace "2" with the number available on your computer.

  7. Assign a letter to this partition, a letter that is dissimilar that those already available on your computer, for case x:\. Type this command to assign the letter: 
    assign letter=x:
  8. Await for the success bulletin to announced: 
    DiskPart successfully assigned the drive letter of the alphabet or mount point.
  9. Blazon go out to quit the DiskPart utility: 
    exit
  10. Blazon this command and replace 10:\ with the letter of the alphabet you assigned earlier to the EFI partition: 
    cd /d x:\EFI\Microsoft\Kicking\
  11. So blazon the bootrec command to repair the book: 
    bootrec /fixboot
  12. Now you demand to backup the quondam BCD and recreate a new ane. Type: 
    ren BCD BCD.backup
  13. Type this command to recreate the BCD and replace the x:\ with the assigned letter earlier: 
    bcdboot c:\Windows /fifty en-us /s x: /f ALL
  14. In above command, Windows is installed on c:\. If the drive letter where you accept Windows 10 installed is different, replace c:\ with your bulldoze letter.
  15. Remove the DVD from the disk tray
  16. Type leave
  17. Restart your computer

Windows 10 bootrec utility results screen

Windows 10 bootrec utility results screen

More Data

Support Links

  • Like shooting fish in a barrel Recovery Essentials for Windows – our repair and recovery disk.

    It's an easy-to-use and automatic diagnostics deejay. It's bachelor for Windows 8, Windows 7 and Windows Vista. It'southward too available for Windows XP and Windows Server.

    Read more at Windows Recovery Disks.

  • The NeoSmart Support Forums, fellow member-to-member technical support and troubleshooting.
  • Get a discounted cost on replacement setup and installation discs: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10, Windows 11.

Applicable Systems

This Windows-related knowledgebase article applies to the following operating systems:

  • Windows XP (all editions)
  • Windows Vista (all editions)
  • Windows 7 (all editions)
  • Windows 8 (all editions)
  • Windows viii.1 (all editions)
  • Windows ten (all editions)
  • Windows 11 (all editions)

Suggest an edit

Source: https://neosmart.net/wiki/fix-mbr/

Posted by: martinsumessneve.blogspot.com

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