Bootmgr is missing: what to do? How to fix Bootmgr is missing on Windows 7 and Windows XP

Problems with the computer always spoil the mood. But one thing - the collapse of the browser due to plug-in problems, and the other - Bootmgr is missing. What to do in this case is not always represented by experienced users. Today, we will tell you what kind of error it is, what makes it appear, and how to correct it.

What it is?

In general, the appearance of such a message on boot is a very serious and bad signal, indicating a problem with the boot area of the hard drive. Typically, this happens either because of the actions of viruses, or (much more often) because of the excessive curiosity of the users who conducted the experiments with the sections. Sometimes a similar situation occurs after an emergency shutdown due to a power failure.

Important! In the latter case, you can really start to seriously worry: standard spindle disks in case of an emergency stop do not always have time to park the reading heads. As a result, deep (relative to the microscopic level, of course) cuts remain on the surface of the magnetic plate. In this case, the message Bootmgr is missing appears. What to do? Alas, but in this case only the replacement of the hard drive will help. However, we will continue to talk about more simple cases.

By the way, which system is most often Bootmgr is missing? Windows XP! The reason is both in the "honorable age" of hard disks used on such computers, and in some system features inherited from "ancestors".

If a person is inexperienced, then often he assumes the hard drive is out of order, which turns into a purchase of a new hard drive and complete loss of all data. Fortunately, everything is not so serious: you can easily overcome Bootmgr is missing. What can I do to fix this?

The boot disk!

First, you'll need to get the boot disk from which you installed the system. However, with the same success, and the usual image of normal Windows, recorded by regular means on an optical disk or a flash drive. If we talk about old systems, then Bootmgr is missing XP should be repaired with the help of disks, since older versions of the BIOS can not always adequately load the recovery environment from another medium.

Insert the media into the drive (or USB port), and then reboot the computer. In the BIOS, set the boot from the media you want. Immediately specify that it is the best to use the flash drive for repair Bootmgr is missing. Windows 7 perfectly supports the boot from such drives directly "out of the box," and for the user is important high download speed and a minimum of errors, which are not so rare when starting the recovery environment from the optical disc.

After that, wait until the system has finished loading the required files. The Setup Wizard dialog box appears.

Setting up the "Wizards"

Select the desired language and other options, click the "Next" button. A new window will appear with a large "Install" button. It does not need to be pressed, because you need to click on the small item "System Restore" located in the lower left corner. In the "System Restore Options" and "Archive Image Selection", click "No" and "Cancel", respectively.

The "Restore Options" window opens again, where you need to click the "Command line" option with the left mouse button.

The most important

And now we will use the utility diskpart, with which you can easily change the active disk partition.

By the way, what is an active partition? Simply put, this is the area of the disk with which the operating system is directly loaded. Keep in mind that there may be more than one dozen such areas on the hard drive, each of which is designed to load its operating system. But start the OS will be from the section that is currently active. However, all this is lyrics.

Note that at the moment there are a lot of different utilities designed to edit partitions. With their help, you can assign an active even one of a dozen areas located on one logical drive! However, it is better not to engage in similar experiments, if you do not have enough experience, as the risk of losing all data on the disk is very large.

In this case, the user will inevitably see Bootmgr is missing. You will now find out what to do, but it's better not to take risks.

How can I "activate" the section?

Again, we'll digress a bit to tell you again about the importance of active partitions. Many beginners, beginning to experiment with the system, often tend to maximize its "optimize", which often results in a desire to reduce the space occupied by it on the hard disk. "Under the knife" these "unnecessary" sections most often fall.

If you select "Disk Management" in the "Administration" panel, you can visually see all the disks that are in the system, as well as all their partitions. The active area in the "Seven" should be at least 100 MB in size, and in Windows 8 - at least 350 MB.

Its importance is indicated by the fact that you will not see it from the usual "Explorer". As you can easily understand, all this is done for the security of the system: if you give inexperienced users access to it, you will probably have to reinstall the OS.

We are working!

To restore the data on the disk, you need to perform the following commands sequentially and very carefully. You need to do this slowly, because otherwise you will probably make a mistake while typing, and the next time you boot the system, you will see Bootmgr is missing, press any key.

• Diskpart. This special program, launched in the command line mode, is intended for managing partitions of hard disks. Once the same function was performed by the FDisc utility.
• List disk. This command will display a list of all hard disks connected to the system, simultaneously assigning them all numbers. Attention! The following operations should be done as carefully as possible, without making any mistakes!
• Select Disk x. Instead of "X", put the number of the hard drive from which the required operating system is loaded.
• List partition. This command allows you to confirm once again that you have selected the correct area, because when you use it, all the partitions that are on the selected hard disk will be displayed again.
• Select Partition x. As you can understand, this time instead of "X" is put the number of the section that should be made active to boot from it OS.
• Active. This option is just the same for activation and is responsible.

This is how "treated" Bootmgr is missing. Windows 7 - the system is reliable, so if all the above actions are performed correctly, it will work for a very long time.