Many years microsoft. improved the Windows operating system restore system, and in Windows 7 and Windows Vista it works in almost automatic mode. If you boot with installation disk Windows 7 and click "" ("REPAIR COMPUTER"), system windows restoration It will be launched and independently try to correct all the errors that it will find. She is able to correct a large number of Problems, however, the situation is quite likely when the bootloader is damaged, and the recovery system cannot cope with this problem. In this case, you can restore the loader manually using the BootRec.exe utility.

application BootRec.exe. serves to correct errors related to loader damage and, as a result, the inability to start operating windows systems 7 and Windows Vista.

Sequencing

The utility will display a certificate for available keys Command line.

Description of the launch keys BootRec.exe utility

Bootrec.exe / fixmbr. - running with key / fixmbr, the utility writes compatible with Windows 7 and Windows Vista Master boot record (Master Boot Record, MBR) system section. Use this option to resolve the problems associated with damage to the main boot record, or if you wish to remove non-standard code from it. Existing table sections in this case are not overwritten

BootRec.exe / FixBoot - Launched with the / FixBoot key, the utility writes to the system section a new boot sector compatible with Windows 7 and Windows Vista. Use this option in the following cases:

1. The Windows Vista or Windows 7 boot sector has been replaced by non-standard.
2. The boot sector is damaged.
3. Has been installed previous version Windows operating system after windows installations Vista or Windows 7. For example, if Windows XP has been installed, NTLDR will be used (Windows NT Loader, Windows NT bootloader), NT 6 (bootmgr) support code will be lost to the Windows XP installation program.

It should be noted that such an effect can be used using the bootsect.exe utility, also located on the Windows 7 bootable medium. To do this, run bootsect.exe. With the following parameters:

bootSect / NT60 SYS - The boot sector of the system partition will be overwritten by a bootmgr compatible code. Details on using the bootsect.exe utility can be found by running it with the / Help parameter.

Bootrec.exe / scanos. - launched with key / Scanos.The utility scans all the discs on the installed Windows Vista and Windows 7 operating systems. In addition, when it is used, a list of found systems that are displayed in this moment Not spelled out in the configuration data warehouse windows downloads Boot Configuration Data (BCD) Store)

BootRec.exe / RebuildBCD. - Launched with this key, the utility scans all the disks for the availability of installed Windows Vista or Windows 7 operating systems. The OS found is displayed from which they can be added to the Windows Download Configuration Data Storage (Boot Configuration Data Store). Use also this option if you want to fully rebuild the download configuration data storage. Before that, you need to delete the previous storage. A set of commands can be like this:

bCDEDIT / Export C: \\ BCDCFG.Bak
ATTRIB -S -H -R C: \\ BOOT \\ BCD
Del C: \\ Boot \\ BCD
BootRec / RebuildBCD.

In the above example, the current download configuration storage is exported to the file. C: \\ BCDCFG.Bak, the attributes "System", "hidden" and "read-only" attributes are removed from it, after which it is removed by the DEL team and rebuilds the command bootRec / RebuildBCD..

Of course, utility BootRec.exe. It will not be very functional, however, it will not help if, for example, the Windows bootmgr bootloader file is damaged or is physically absent. In this case, you can use another utility, which is also part of the Windows 7 distribution medium - bCDBoot.exe..

Restoring the download environment using BCDBoot.exe

BCDBoot.exe. - This is a tool that is used to create or restore the download environment located in the active system section. The utility can also be used to transfer download files from one hard disk or partition to another.

The command line in this case may look like:

bCDBoot.exe E: \\ Windows

Replace e: \\ Windows On the path corresponding to your system. This operation will restore the damaged Windows loading environment, including the download data configuration storage files (BCD), including the file mentioned above bootmgr..

Syntax of the command line parameters Utility BCDBoot

The bcdboot.exe utility uses the following command-line parameters:

BCDBoot Source]

a source - Specifies the location of the Windows directory used as a source when copying the download environment files.

/ L. - optional parameter. Specifies the download environment language. The default is English (USA).

/ S. - optional parameter. Specifies the system partition disk letter where the download environment files will be installed. The default system section specified by the BIOS firmware is used.

/ V. - optional parameter. Includes mode detailed logging Work utilities.

/ M. - optional parameter. Combines the parameters of the newly created and existing boot record of the repository and writes them into a new boot record. If the GUID of the operating system bootloader is specified, to create a boot record, combines the bootloader object with the system template.

Summary. The article covered the principles of working with utilities bootRec.exe. and bCDBoot.exe.serving to resolve the problems associated with the inability to launch the Windows 7 operating system due to the damaged or missing loader

Or damaged files (for example: NTLDR Is Missing. Press Ctrl + Alt + Del to Restart, or Unable to run Windows due to a spoiled or missing file: \\ Windows \\ System32 \\ Config \\ System, Or you can not run Windows due to errors in the program. Report this as an error: necessary dLL libraries for kernel. Notify this error in the support service).

It is not possible to go to the recovery point, nor download the latest successful configuration, nor even boot into . In such cases, most immediately rush to reinstall, although, as a rule, you can restore the performance of the system in 5 minutes, using the so-called recovery Console.

For this you need to Bios.install C. Download CD-ROM "a, put in the tray CD-ROM "and boot disk with installation package Windows XP Professional and reboot. When installer Windows XP. will download your files in rAM The window will appear Installing Windows XP Professionalcontaining a selection menu from which we are interested in * To restore Windows XP using the Recovery Console, click.

Click R. . The recovery console will be loaded. If on installed one and it () is installed on the disk C:The following message will appear:

1: C: \\ Windows

In which copy Windows Do you need to log in?

Enter 1 , click ENTER.

A message will appear:

Enter the administrator password:

Enter the password, click ENTER (if there is no password, just click ENTER).

The system invitation will appear:

C: \\ Windows\u003e

enter fixMBr.

A message will appear:

**A WARNING**

There is a non-standard or unacceptable main boot record on this computer. When using FixMBR, you can damage the existing partition table. This will lead to all sections of the current hard disk.

If there are no problems of access to the disk, it is recommended to interrupt the operation of the FixMBr command.

Confirm the recording of the new MBR?

Enter y. (which means yes).

A message will appear:

A new basic boot record is performed on the physical disk \\ Device \\ HardDisk0 \\ Partition0.

New basic boot record has been successfully done.

On the system invitation to appear: C: \\ Windows\u003e

Enter fixBoot

A message will appear:

End section: C:.

Want to record a new boot sector in section C :?

Enter y. (which means yes).

A message will appear:

File system in the boot section: NTFS (or FAT32).

FixBoot command writes a new boot sector.

The new boot sector has been successfully recorded.

Click Del.Enter B. BIOS Setup. and install the download from hard disk.

Notes

1. If you do not know what and recovery Console, in similar critical situations – To avoid deterioration of the situation! – Do not try to fix everything yourself, – It is better to seek help from specialists.

2. If on Installed more than one , – Contact your specialists!

3. Brief certificate for the applicable commands:

a) fixBoot_disch_name:

This command is used to record a new boot sector code. Windows In the system section. In the syntax of the team Quality name – The disc on which the boot sector will be released. This command corrects damage in the boot sector Windows. It overrides the parameters which are recorded in the boot section of the system. Team fixBoot Supported on the base x86..

b) fixMBr_name

This command is used to restore the main boot record boot section. In the syntax of the team name of device – Optional device for which a new basic boot record is required ( MBR). Use this command if the boot entry is empty Windows fails.

You can consider on simple example, and the second option: editing from the boot.ini file recovery console.

The main boot record is the first sector of the boot partition on the hard disk. The sector is recorded in the sector table and the program to which the operating system loading mission is assigned. In case of damage or absence of the main boot record, we will not load the operating system never. And sometimes this damage or absence is still happening at the most inappropriate moment.

For example, one user decided to install 20 operating systems on his computer, and engaged in the creation of the relevant sections on the hard disk (and even create sometimes), and then, respectively, the installation. Naturally, all this once stops loading and need to leave the situation with dignity.

Windows XP Recovery through Console

Insert the Windows XP installation disk into the drive and reboot, in the BIOS set the drive as the first boot device if you do not know how, read from us. Next, the installation is loaded windows program XP and after downloading menu appears, it is necessary to select item number 2. To restore Windows XP using the Recovery Console, click R..

Press R. and enter the recovery console, by the way can you read

We have installed one operating system on the disk FROM and to the question in which a copy of Windows You should log in, set the number 1 And click Enter.

If you did not have an administrator password just press ENTER if you entered the password.

A message will appear:

That's all Windows XP Recovery through Console It should be successfully completed, drive EXIT and reboot.

What can not happen to us, when entering the FixMBr command, an error message appears, this means that the entry in the partition table (MBR) is blocked by settings in the BIOS, you need to go to the BIOS and find the Boot Virus Detection parameter there is blocking this option blocks Overwriting loading sector hard disk, in our case and occurs.

There may be such an error. "Unable to start Windows due to hardware disk setup errors," in this case the boot.ini file is to blame, it is possible to download it again into the recovery console and enter the BootCFG / Rebuild command and press the Enter key.

• Add the system to the downloads list? .
  Agree y (yes)
  Enter the download identifier:
  Enter Windows XP Professional.
  Enter the operating system boot settings:
  Enter / FastDetect Special Wrench, the system does not define Plug and Play devices During the download process, you can read

Well, we changed the boot.ini file and the last if you have a few hard disks, To find out which exactly the letters are assigned to the MAP command and devices and the corresponding letters, as well as file systems will be displayed.

Home\u003e Operating Systems\u003e Windows

Installing Windows 2000. Installation Problems

The process of loading the system can be divided into several stages:

Before the bootloader screen appears (the system selection menu you want to download):

• Immediately after the samotesting phase is completed (POST), the computer "freezes"
• The bootloader screen does not appear.
• The following types of error messages appear on the screen:
  • A Disk Read Error Occurred (disk read error).
  • INSERT A SYSTEM DISKETTE AND RESTART THE SYSTEM (Insert the system floppy diskups to restart the system).
  • Hard Disk Error ( Hard error disk).
  • Hard Disk ABSENT / FAILED (Hard disk is missing / failure).

It is possible that with such a scenario, the computer will not be launched at all. If you have previously formatted all sections for use file System NTFS - Apply MS-DOS utilities to solve these problems you cannot. I advise you to keep boot floppy disks from Windows 2000. This type Problems can be caused by the following things:

1. Lack of system partition on hard disk. Usually occurs when it is possible to configure the only purchased hard disk or with its incorrect formatting. You can correct this problem with the FDISK utility.
2. Damaged main boot record. What is it needed for?
   • Reads the partition table located in this disk sector.
   • Defines the location of the boot sector of the section.
   • Loads and executes the code located in the boding sector of the section.
   If the code of the main boot record is not able to perform these tasks, one of the messages appears:
   • Missing Operating System (no operating system).
   • INVALID PARTITION TABLE (incorrect partition table).

To restore the damaged main boot record, you can use the Recovery Console Command Console (Recovery Console). This is done using the FixMBr command:

fixMBR [Name Department]

Device_name parameter: Device (disk) to record a new basic boot record. To get a name, you can use the MAP command. The device name may look like this:

\\ Device \\ Harddisk0.

In the following example, the new main boot record is recorded on the device specified above.

fixMBr \\ Device \\ HardDisk0

If the device name is not specified, the new basic boot record will be recorded on download devicewhich is the disk from which the main system was loaded. If an incorrect or non-standard partition table signature is detected, a message is displayed that requests confirmation. If access to discs is carried out without failures, the confirmation should be answered negatively. Recording a new basic boot record to the system partition may damage the partition tables, as a result of which the sections can be inaccessible. Damage to the loading sector of the section is usually characterized by a "blue screen" and Stop error Next content:

Incaccessible_boot_device..

Either the machine "freezes" during the boot process and the screen remains empty. Even if obvious rough damage is not observed - the boot sector of the section may not work correctly. The problem may be that the NTLDR file is damaged, or the boot sector is damaged. To diagnose the problem, we enter the following method: We try to rename the NTLDR file and run Windows 2000 from this hard disk. If the boot sector is normal, and the problem is damaged file The loader will appear the following message:

COULDN "T FIND NTLDR - If the bootloader file is in the NTFS section

A Kernel File IS Missing From The Disk - If the NTLDR bootloader file is in the FAT section.

Accordingly, it is required to replace the damaged NTLDR file to the working (or from the boot floppy disk, or from the working machine).

Immediately I warn you that the default NTLDR file has attributes "hidden", "system" and "read-only". If it is in the FAT section - change the attributes from under DOS-A using the ATTRIB -S -S -H -R NTLDR command. If after replacement file ntldr. You do not get such messages about error and the car does not want to load, it means that the boot section itself is damaged. To eliminate this trouble, you need to download the recovery console (i.e., start installing Windows 2000 and after the copy procedure installation Files The hard disk will be finished selecting not installation, but the restoration of the system). After the console is loaded to use the following command:

Recording to the system section of the new boot sector. FixBoot command Available only on the Windows 2000 Recovery Console, which runs from the Windows 2000 installation program.

fixBoot [Disk]

Parameter: The disk to record the boot sector. By default, the system section is used from which the system is loaded. In the following example, the new boot sector will be recorded in the DC system section:

Problems arising from the launch of the bootloader, but before registering the user in the system

Windows 2000 Resource Kit contains the debug version of Ntdetect.com, which is called ntdetect.chk. If ntdetect.com cannot detect all the hardware devices that he, in your opinion, must find, you can use the debug version that will help localize the problem. The debug version is installed using the InstalD.cmd file, which performs the following actions:

• Renames Standard NtDetect.com.
• Copies Ntdetect.chk in Ntdetect.com.

After performing these operations, you need to restart the computer. When you start a system with a debug version of NtDeTect, information on all detectable hardware will appear on the screen. After filling out each information screen, you must press the ENTER key. When the need for debugging option disappears, run the InstalD / NOT command.

SOS parameter in the boot.ini file.

You can add the / SOS parameter to the boot.ini file, which will cause NTLDR to display the nuclear names on the screen and drivers as they download. This will help digitize problems with a missing or damaged device driver.

Need a good advice how to produce windows 7 boot recoveryIf the start-up recovery using the seven installation disk does not help. In short, I will explain what the case is: on the computer, Windows 7 was installed on the computer, then Windows XP was needed by the second system, after installation it was naturally launched one, for downloading two operating systems used EasyBCD program. In the future, XP has not needed and the section on which it was located I formatted from Windows 7. Now, when loading, except for the black screen, nothing. What can be taken in this case? In more detail if you can. Sergey.

Windows 7 boot recovery

Hi friends! Most importantly, do not worry, you have a simple problem and in principle a simple means "Restoration windows startup 7 "The article described in our article should help, but! If this article does not help you, then the other two should help:

these articles described several more good ways Restore the download of your operating system, besides them there is one more, so try and just do not give up so much.

Let me remind you that you cannot install the older operating system after younger, Windows 7 will not be downloaded after installation on windows computer XP, since the latter when installing rewrites the main boot record (MBR) on itself. Therefore, you installed an additional download manager that is used to set up the download of several operating systems and has its own bootloader.

1. I also want to say that often in the unsuccessful download of Windows 7 to blame the errors of the file system, you can correct them even if the operating system is not loaded, all the details in our other article " "
2. Friends, in this article we will work with the Windows 7 recovery environment, and more precisely with the recovery environment command line. I will give you the necessary teams, but if it is difficult for you to remember, you can. It greatly facilitates your work.

• The main boot record (MBR) is the first sector on the hard disk in which the partition table is located and a small program loader, which reads the data from which partition of the hard disk to load the OS, in the future information is transmitted to the section with the operating system installed, For its download. If the main boot record is incorrect information about the location of the system, it means that we get different errors when loading, here is one of them "bootmgr is missing press CTR-ALT-Del for Restart" or will watch the black screen. Corrected problem windows 7 bootloader restoring.

When you removed an XP old woman with EasyBCD, then left your computer to the arbitrariness of fate with an incomprehensible boot record and he gives you a black screen as a sign of gratitude. To correct the situation, we will spend restoration of the progresszikychik Windows 7, namely I restarts the main boot record using the bootrec.exe utility located on the recovery disk or on the installation windows disk 7 (friends, if you have a netbook and you want to use the recovery environment located on the flash drive, then read the comments first). Also this utility we will write down the new boot sector, understandable Windows 7.

Windows 7 boot recovery automatically

Loading from the recovery disk or installation disk with Windows 7, in the initial phase of the computer loading, when you appear a sentence to boot from the "Press Any Key to Boot from CD ..." disk, click within 5 seconds on any keyboard key, otherwise you do not boot from the disk

There is a short search installed systems Windows and analysis of problems that interfere with their download

Typically, problems are quickly found and the recovery environment proposes to eliminate them automatically. Click the "Fit and Restart" button, after that the computer will restart and download Windows 7 will be restored.

If the system download problems continue or you will not be prompted to correct the problems automatically, it means that you need to select the operating system that you want to restore, it is most likely one and next.

First select a toolLaunch restorationIt can also solve problems with downloading Windows 7

Windows 7 bootload recovery manually

If this means does not help, choose a tool Command line

We enter the commands:

diskpart.

lIS Vol. Also we see the section with installed windows 7, he has a letter D: volume of 60 GB.

sEL VOL 1 (choose Volume 1)

aCTIV (make it active)

eXIT (exit from diskpart)

bCDBoot D: \\ Windows (where D: section with installed Windows 7), this command restores Windows 7 download files (BootMGR file and download storage configuration files (BCD))!

"Download files successfully created"

Windows 7 loader recovery manually (Method No. 2)

In the command line window, enter the BootRec and Enter command.

output full information About the capabilities of the utility. Select the BootRec.exe / FixMBr's main boot record entry.

The operation has been successfully completed. A new boot record is recorded in the first sector of the boot partition.
The second bootrec.exe / fixboot command writes a new boot sector.

The operation has been successfully completed. Exit. Next, we try to download our Windows 7.

Friends if the bootrec.exe / fixmboot commands and bootrec.exe / fixboot do not help you, do not despair, there is another means.

Method number 3.

We enter the command Bootrec / Scanos.She scanches all your hard drives and sections for operating systems and if such are found, the appropriate warning will be released. Then you need to enter a command BootRec.exe / RebuildBCD.This utility will offer to deposit Windows found in the download menu, agree and enter Y and click Enter, all of the Windows found has been added to the download menu.

In my case, two were found. oS. Everything can be seen on the symbol.

In addition to the above method, there is one more, enter the BootSect / NT60 SYS on the command line, the main boot code will also be updated.

EXIT.

So, the error is that we have on both hard disks Must be marked by the red checkbox, the first hidden System Reserved sections (reserved by the system). On Windows 7, the volume of such partition is 100 MB, and on Windows 8 350 MB, exactly these sections are attributed: System. Active And it is on these sections that the download storage configuration files (BCD) and the system load manager file (BOOTMGR file) are located. And we turn out these attributes are other sections. Because of this, Windows 7 and Windows 8 are not loaded.

Choose the first hDD 1, click on the first section of the System Reserved (reserved by the system) with the right mouse and choose "Mark as active"

Tom "reserved by the system" will be marked as active. Click OK.

Doing the same with disk 2. Program Acronis DISK. Director works in a deferred operation mode so that the changes entered into force click "Apply Waiting Operations" button

Proceed.

As you can see, after our changes, those sections needed were active.

We leave the program and reboot. The result of the work is positive - both operating systems are alternately loaded.