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When you turn on the computer, bootmgr is missing. About one critical error with the message bootmgr is missing

There is such an error when loading the operating system, I can’t do anything with it, I fix it as it is written everywhere, I boot from the installation Windows disk 7, I choose system recovery, then the command line, the diskpart and list volume commands, I determine the letters of the drive (D:) and the system (C:) I write D: then the command copy bootmgr c: \ and I can’t boot again, some kind of nightmare, save people. Anton.

BOOTMGR is missing in Windows 7

You will never guess how we corrected the situation, the fact is that Anton did everything right. I came across such an error quite often and I want to say that the deleted or damaged boot loader of the operating system is not always to blame.

Note: Friends, if this article does not help, try our other two articles - and they describe other ways to restore the boot of your operating system.

There are several more reasons associated with iron, for example, often on a computer that is brought in for repair with this malfunction BOOTMGR is missing in Windows 7, the settings of the Boot tab in the BIOS fly off. And this means that the bootloader is alive and unharmed on the disk with installed Windows 7, but since the computer is trying to boot from the wrong hard drive, we get a similar error. But what to say, let's see with concrete examples how to cope with this trouble.

Repairing the Windows 7 Boot Loader with Startup Repair.
Restoring the bootmgr bootloader in Windows 7 using the command line.
At the end of the article, we will solve the error problem BOOTMGR is missing in Windows 7 by changing the settings in the BIOS

First of all, let's try to restore Windows bootloader 7, for this, at the very beginning of the download, press the F-8 key, a menu should appear Additional download options,

in it we must select the first item Troubleshooting your computer. If a this menu no, it means we have removed the hidden partition containing the environment Windows Recovery 7, in this case we must use either the Windows 7 installation disk. We boot from the installation disk of the seven, in the initial phase of booting the computer, when prompted to boot from the disk " Press any key to boot from CD…”, Press any key on the keyboard, otherwise the disk will not boot

There is a quick analysis of problems that interfere with the normal boot of Windows 7, the problems found in the boot options of this computer, the recovery environment offers to fix automatically. Click on "Fix and Restart". In most cases, such simple actions will lead to the fact that the boot of Windows 7 will be restored.

and select Launch Recovery, Windows 7 will launch the Startup Repair tool and if it finds any corrupted files, it will replace them. If the number does not pass, read on.

The second way: in the window System Recovery Options choose Command line,

Attention: To better understand what I will do next, I will show you the "Disk Management" of my operating system.

Everything is as usual, the operating system files are located on the C: drive, but you see this hidden partition without a drive letter, with a capacity of 100 MB Reserved by the system, and so, it is in this section that all Windows 7 boot files are stored, including the bootloader of the operating system, the bootmgr file, but it is not there now or it is damaged, so we have an error when loading " BOOTMGR is missing. Press Ctrl+Alt+Del to restart".

Our goal is to copy the bootmgr file from the Windows 7 installation disk to this particular partition. Let's do this simple operation, but first decide on the drive letters, since yours may be different.

Note: Friends, now we will work with the command line of the recovery environment. I will give you the necessary commands, but if it is difficult for you to remember them, you can create a cheat sheet - a text file with a list of necessary resuscitation commands and open it directly in the recovery environment. This will greatly facilitate your work.

We type in the command line

diskpart

list volume

As you can see, the letter F: is assigned to the drive on the command line, and my hidden partition Reserved by the system, 100 MB, Windows 7 Recovery Environment assigned the letter C: (operating system files with Windows folders and Program Files are on the D: drive).

Enter exit

and exit diskpart .

In the command line we drive F : , with this command we enter installation disk Windows 7.

copy bootmgr C:\ that is, we copy the bootmgr bootloader from the Windows 7 installation disk to a hidden partition Reserved by the system C: . That's all.

Friends, the hidden section "Reserved by the system" of 100 MB is not always created when Windows installation 7, in rare cases it may not be, in this case, copy the bootmgr file directly to the root of the disk with the operating system files.

If, when copying the bootmgr file, you get an error stating that you don't have enough rights, then try completely overwriting the BCD boot store.

In the Windows 7 Recovery Environment, decide on the drive letters.

Enter the command:

diskpart

list volume

drive letter assigned F:, and the hidden partition is System Reserved, 100 MB, Windows 7 Recovery Environment assigned a letter C: . So the operating system files with the Windows and Program Files folders are on the disk D:.

Leading a team

bcdboot.exe D:\Windows

This command will overwrite the entire BCD boot store (the contents of the Boot folder in the System Reserved section) and the bootmgr file for Windows 7 located on the D: drive.

Success. The download files have been successfully created.

If there are any errors again, you can boot from the LiveCD and delete all the contents of the hidden partition Reserved by the system, 100 MB, and then recreate again with a command you already know.

Details in this article http://website/421-ntldr-is-missing-v-windows-7.html.

Troubleshooting BOOTMGR is missing in Windows 7 from our reader. Anton, like me, has three hard drives on his computer, only one of them has Windows 7 installed, which means that the computer must boot from it. Let's go into the BIOS and look in the BOOT tab, item Boot Device Priority

whether we are loading from the disk we need, of course not, in the first place is the Western Digital hard drive,

which contains only personal data, and where is the MAXTOR hard drive with Windows 7 installed, let's look. Why the settings in the BIOS were broken, there are many reasons, for example, the CMOS battery has run out or the computer was turned off incorrectly. Fixing the error BOOTMGR i s missing , press Esc on the keyboard and go to the Hard Disk Drives tab

in it, in the presence of several hard drives determines the one from which the computer needs to boot the operating system.

Putting the MAXTOR hard drive in first place

What else can be done in case of an errorBOOTMGR is missing in Windows 7

Recently a friend of mine brought me system unit with a complaint that the two he has installed on different hard drives operating rooms Windows systems 7 and Windows 8 won't boot giving BOOTMGR is missing error on boot in Windows 7.

I had to boot my computer from boot disk Acronis Disk director. As you can see, there are two hard drives, the first is Disk 1 with Windows 7 installed, and the second is Disk 2 with Windows 8 installed. Pay attention to the two red flags that mark the wrong sections at all. Why? The red flag means that this section is active and the operating system should be loaded from it.

The error is that on both hard drives, the first hidden partitions System Reserved (Reserved by the system) should be marked with a red flag, that is, they should be active. On Windows 7, the volume of such a partition is 100 MB, and on Windows 8 350 MB, these partitions have the following attributes: System. Active and it is on these partitions that the boot storage configuration (BCD) files and the system boot manager file (the bootmgr file) reside. And we get these attributes are other sections. Because of this, Windows 7 and Windows 8 won't boot.

When working at a computer, system messages with the names of various errors may appear on the monitor. An advanced user will not be at a loss, but what should an ordinary user who is unfamiliar with the intricacies of computer terminology do? This is why many people get lost and do not know what to do if the BOOTMGR is missing error keeps popping up when starting the PC.

This error is quite common and quite solvable. Therefore, you should not panic at all and immediately run for help to the nearest service center for equipment repair.

In the event of such an error, instead of the normal loading of the Windows operating system and the appearance of the desktop only a black screen is displayed with the inscription BOOTMGR is missing. The line below, as a rule, says Press Ctrl+Alt+Del to restart. In translation, this means "Press the key combination Ctrl + Alt + Del to reboot the device." However, if you follow this recommendation, then the error will most likely reappear the next time you boot your computer.

Main causes of the problem

As a rule, the vast majority of computer problems when working with Windows appear due to the fault of the users themselves due to the inept use of computer devices or programs.

However, having certain skills in working with a PC, a person becomes much more comfortable and easier to resolve any problems that arise. And later such cases when absolutely not sure what to do if error windows boot manager appears again and again, becomes much smaller.

The message BOOTMGR is missing appeared on the monitor screen. What to do? Windows XP or Windows 8, 10 OS version - A computer user with any version of the Windows operating system may encounter this error. It is related directly to the Windows bootloader itself.

The Windows bootloader is a program responsible for launching various kinds of utilities at the same time as the operating system is turned on. But due to some system failure, the BIOS (BIOS) cannot find this bootloader when trying to turn on the OS and writes a message on the screen about it.

There are several reasons that can cause the error to appear:

Incorrect settings in the BIOS of the device. For example, when a user who is poorly versed in technology, who does not have the proper set of knowledge and skills, decided to randomly change the settings in the BIOS system personal computer or, for example, a laptop.
Frequent improper shutdown of the computer. For example, if the device is constantly turned off directly from the outlet when it is still working.
Too frequent cleaning of the PC from unnecessary garbage, that is, temporary files and cache. For example, we can cite the case when, due to inexperience, the user accidentally deleted some system file in order to save space, considering it unnecessary.
A serious system virus that has penetrated a device that does not have high-quality antivirus program. A virus can also appear on a computer if the user has not updated anti-virus databases for a long time.
The most serious cause of an error is physical damage. hard drive. This can happen when the computer is carelessly carried somewhere or in cases of physical impact on the device, for example, strong shaking or something like that. In such situation HDD computer can be severely damaged and become unusable. To resume work on such a PC, you will need to repair or replace the hard drive with a new one.

Self troubleshooting

If the PC user roughly imagines the reason that could provoke the appearance of an error, then this will greatly simplify the task of eliminating it. To understand what to do if bootmgr is missing error in windows 7 or any other version of the OS appears regularly, it is important to make sure that the hard drive of the device has not been subjected to rough physical impact. Otherwise, you should take the hard drive of the device for repair or even completely replace it.

For other situations, when the user is sure that with hard drive okay, other methods of solving the problem will do.

Proper BIOS setup

Most advanced PC users will advise first of all to go into the BIOS of the device. It is possible that the cause of the constant occurrence of the error is an incorrectly selected boot disk. The system can produce Windows boot OS only from the drive on which the operating system is installed. But if the CD-ROM of the computer is selected as the boot device, and there is no disk with Windows OS in the PC, then the device will not be able to start downloading.

First of all, going into the BIOS (in some cases it is called EFI / UEFI) of the computer, make sure that in the section called Andanced BIOS Features, in the First Boot Device and similar items, those devices where there is an operating system are selected.

Most often, in the section called First Boot Device, most users select Hard Disk, and in the Second Boot Device section, CD-ROM. When these settings are selected, the computer first of all will try to load operating system from a connected internal hard disk, and secondarily - through a disk inserted into the drive.

Please note: if your OS is located on a flash drive or USB hard drive and you want to boot it, then this means that you should select the flash drive or USB device as the first startup device (i.e. in the First Boot Device section), not hard disk.

In addition, a system crash that causes the BOOTMGR error to appear endlessly after itself can occur after connecting a bootable USB flash drive to the computer. It is likely that the PC will try to launch the OS from it, and you have long removed the flash drive from the device or erased data containing bootable components from the flash drive.

System Restore

Another method that can help troubleshoot BOOTMGR error and similar ones, for example, when the sign appears missing MBR Helper, Invalid Partition Table, NTLDR is missing or BOOTMGR is compressed, is to launch a tool to restore the Windows system to its previous state. In many modern computers there is a convenient recovery mechanism - rollback of the system state to its workable mode.

To start using the built-in System Restore utility, you should restart your computer and press the F8 key on your keyboard at startup. E if everything is done correctly and a recovery utility is built into your device, a unique menu will appear. Moving through its points, you must select the line called "Computer Troubleshooting", and then press the Enter key.

It is likely that running System Restore will be sufficient and the computer will be able to repair any corrupted files on its own and eventually start up without problems.

Using a boot disk

BOOTMGR is missing Windows 7. How to fix this error using the toolkit located on the bootable USB flash drive or Windows disc.

The procedure for using this method:

Command line application

In the event that none of the proposed solution methods helps you, and the bootmgr is missing error still appears when installing from a USB flash drive, try another way to fix the computer. First all steps must be taken from the previous method using a boot disk or flash drive, however, when the first window appears, you must select the “Command Prompt” section instead of “System Restore”.

A command line window will open. To restore the normal operation of the computer, do the following:

Checking the BIOS settings

This is the case when you have more than one hard drive installed. This refers not to such partitions on the same disk as C, D, E, but physical hard drives. So move on to the next item. However, take care to remove the existing flash drives from the PC and external drives, if any, and reboot it again.

Sometimes it happens that the wrong disk is mistakenly taken from the BIOS in the settings. . You need to check which disk you have chosen or immediately change it to another, then restart the computer again.

BOOTMGR is missing - how to fix for Windows 7 automatically

We have an advantage thanks to Microsoft, the developers of a special recovery environment with which all problems with the operating system are easily solved. To start it, you need to hold down the button for a long time. F8” until a menu with a black background appears.

If you did not wait for the desired effect, then you need to find another installation disk for Windows or a recovery disk. A flash drive with the installation is also suitable. We start loading from a disk or a flash drive. Press ANY button when an inscription appears on a black background “Press any key to boot from CD or DVD”, otherwise it will boot from the hard drive and you will again find your mistake. Now read below System Restore».

With the help of the recovery utility, the hard disk will be diagnosed, all malfunctions will be automatically detected. We are waiting for their automatic correction and restart the PC.

If this time there are no changes, you will have to reboot again from the installation disk, pointing to "System Restore" and click on the list of certain operating systems "Next".

Click on " Launch Recovery».

You can rejoice if everything is resolved and the error is fixed.

Resolving bootloader problem using command line

Efficiency is clear, although the process is quite time-consuming. You need to download the recovery environment and select for this you need to " Command line”, and not as previously selected “Startup Repair”. It's clear.

It goes like this. It is accepted that when installing Windows, a special hidden partition of about 100 megabytes in size is always created, which is reserved by the system. When Windows is loaded, there are no letters, such as C, D, etc. However, there is a mini-program that is designed to load our operating system and there is always a bootmgr file. Suddenly it disappears or a breakdown occurs, then this particular error “BOOTMGR is missing. Press Ctrl-Alt-Del to restart." We have to restore the file, for which we copy it from our installation disk.

To carry out this operation, the command line will help us, this is again a black window, which you launch. First, you should decide from which and to which disk you need to copy the file, because it may depend on the configuration or something else, but the drive letters on different PCs may be different.

You need to type the following command at the command line:
Diskpart After the greeting, immediately type the following command:
List volume Pay attention to our 100-megabyte size - it is assigned the letter "C", and the letter "F" - CD / DVD-ROM. Disks and my data are marked with the letters "D", "E".

Next, enter the commands one by one:

You should exit diskpart
Exit
You should go to the letter CD-ROM "a, in this case it will be "F"
F:
You should copy the bootmgr file to a disk, the volume of which is our 100 megabytes, this is drive "C"
Copy bootmgr C:\

You will receive a message that the file was copied successfully.

It happens that when installing Windows on a disk pre-partitioned, you will not be able to find a hidden partition of 100 megabytes in size. Then you should copy the bootmgr file directly to the root of the data disks. And do not bother about on which of the disks the operating system files are copied by copying the file to the disks. In my case, disks D and E are 2 teams.
Copy bootmgr D:\ and Copy bootmgr E:\ Now we reboot the PC and observe: no? Open the command prompt again, start typing the command:
Bootsect/nt60 All Everything. Reboot.

If even now BOOTMGR is missing has not disappeared, then one thing remains - the disk is not the same or this partition is marked - “ Active».

Making a disk "Active" from the command line

The situation is in such a way that the partition with the OS loader must have a bootmgr file, and also be marked "Active" - it must be loaded from it. If a completely different disk is marked, then a disappointing result occurs.
Everything is solvable from the command line. Let's start typing commands again:
diskpart and list disk
You will immediately see a numbered list of physical hard drives that are in the system. You have to choose a disk with the desired operating system, for example, be guided by its size. Having only one physical disk, you should select it. Do it with the command:
Selest disk 0 or 1 Define: 0, 1 - this will be the number of the corresponding disk. Then we start typing the command to get the lists of partitions of a particular disk:
List partition Therefore, you need to find exactly the 100 MB partition. In addition, this technique also works for Windows 8, the only thing we will look for is a 350 MB partition. Do you have such? If not, then we take the first partition or the second, we need to determine on which drive, C or D, you installed the corresponding operating system. Next, select the command with certain number at the section:
Select partition 1 or 2 And install this partition " Active»:
Active Now Exit
Initially, before the "exit" command, the following message will appear: Section marked active". Reboot the PC again.

Eventually

So, in order to get rid of BOOTMGR is missing”, you need to restore your bootloader from Windows 7, more specifically, the bootmgr. A unique opportunity provided by Microsoft - automatic recovery, if this method does not work, we can use the command line. In special cases, when more than two hard drives are installed, it is necessary to check the BIOS settings. It happens sometimes, a completely different disk is selected as "active".

One of the saddest situations that can occur when you turn on your computer is the error BOOTMGR is missing. Let's figure out what to do if instead of a welcome windows windows you saw this message after starting the PC on Windows 7.

The main factor in the error BOOTMGR is missing is the fact that the computer cannot find the OS bootloader. The reason for this may be that the bootloader has been removed, corrupted, or moved. It is also possible that the HDD partition on which it is located has been deactivated or is damaged.

For solutions specified problem you must prepare a Windows 7 installation disk / flash drive or LiveCD / USB.

Method 1: "Startup Repair"

In the Windows 7 recovery area, there is a tool that is specifically designed to solve such problems. That's what it's called - "Start Recovery».

Method 2: Bootloader Recovery

One of the root causes of the error under study may be the presence of damage in boot record. Then it needs to be restored from the recovery area.

Method 3: Partition activation

The partition from which the boot is being made must be marked as active. If for some reason it has become inactive, this just leads to an error. BOOTMGR is missing. Let's try to figure out how to fix this situation.

This problem, like the previous one, is also completely solved from under "Command line". But before you activate the partition on which the OS is located, you need to find out what system name it has. Unfortunately, this name does not always correspond to what is displayed in "Explorer". Run "Command line" from the recovery environment and enter the following command into it:
Click the button Enter.

The utility will launch diskpart, with the help of which we will determine the system name of the section. To do this, enter the following command:
Then press the key Enter.

A list of physical storage media connected to the PC with their system name will open. In column "Disk" the system numbers of the HDDs connected to the computer will be displayed. If you have only one drive, then one name will be displayed. Find the number of the disk device on which the system is installed.

In order to select the required physical disk, enter the following command:
Instead of a symbol «№» substitute the number of the physical disk on which the system is installed into the command, and then press Enter.

Now we need to find out the partition number of the HDD on which the OS is installed. For this purpose, enter the command:
After entering, as always, apply Enter.

A list of partitions of the selected disk with their system numbers will open. How to determine which one Windows is on, because we are used to seeing the names of sections in "Explorer" alphabetically, not numerically. To do this, just remember the approximate size of your system partition. Find in « command line» a partition with the same size - it will be the system one.

Next, enter the command according to the following pattern:
select partition no.

Instead of a symbol «№» insert the number of the partition you want to make active. After entering press Enter.

The section will be selected. Next, to activate, simply enter the following command:
Click the button Enter.

Now system disk became active. To complete the utility diskpart type this command:

Restart the PC, after which the system should be activated in standard mode.

If you start the PC not through the installation disk, but use LiveCD / USB to fix the problem, activating the partition is much easier.

After the system boots, open "Start" and go to "Control Panel".

Next, open the section "System and safety".

Go to the next section - "Administration".

In the list of OS tools, stop the selection on the option "Computer Management".

Launching a set of utilities "Computer Management". In its left block, click on the position "Disk Management".

The interface of the tool will be displayed, which allows you to manage disk devices connected to the computer. The central part displays the partition names of the HDD connected to the PC. Right-click on the name of the partition on which Windows is located. Select an item from the menu "Make Section Active".

After that, restart the computer, but this time try to boot not via LiveCD / USB, but in standard mode, using the OS installed on the hard drive. If the problem with the error was only in the inactive partition, the startup should proceed normally.

There are several working ways to resolve the "BOOTMGR is missing" error when booting the system. Which of the options to choose, first of all, depends on the cause of the problem: damage to the bootloader, deactivation of the system partition of the disk, or the presence of other factors. Also, the algorithm of actions depends on what kind of tool you have to restore the OS: installation Windows disk or LiveCD/USB. However, in some cases it turns out to enter the recovery environment to fix the error even without these tools.