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NTLDR is missing – system recovery

I’ll tell you that I know about a common error in Windows NTLDR is missing operating systems and about system recovery when it occurs.

NTLDR is a bootloader (boot file) of versions of the operating systems Windows NT, Windows 2000, Windows XP, Windows Server 2003, and is called by the full name of NT Loader.

To run the above operating systems, three files are required in the active partition of the disk or on the device from which boot is configured: the NTLDR file containing the bootloader code, the boot.ini file containing the commands for creating the system selection menu and the parameters for its launch, and the ntdetect file .com.

If at least one of the files is missing or cannot be accessed at boot time, the operating system will not boot and will give an error.

Let’s make a list of possible causes of the malfunction:

The wire (cable) connecting the computer’s hard drive to the motherboard may have been damaged or disconnected;
An operating system hard drive may not be on the boot device list. Check the Boot Device Priority section in the BIOS – this is the sequence in which the system accesses devices when they try to boot .;
The hard drive is not detected by the system at all, for example, because it simply crumbled or, in other words, failed due to the appearance of bad memory sectors on it;
A new hard drive was installed, and at the same time jumpers (jumpers) on the disks were not correctly installed;
The Windows OS installed on the computer was infected with a computer virus;
The boot.ini file was deleted or moved from the root directory of the operating system disk (usually it lies in C :);
The NTLDR and NTDETECT.COM files were deleted or moved from the root directory of the disk with the operating system (usually they also lie in C :);
Too many files have been created in the root directory (C :). The specifics of the NTFS file system is such that the file information is stored in a large MFT database (stands for Master File Table). When there are a lot of files in a folder, in the database they are divided into arrays to which indexes are assigned. Files in arrays are sorted alphabetically. At boot, the system only accesses the array with the first index, and if there are a lot of files, then the NTLDR file may not appear in the first array.
Here is a list of reasons, and then not complete. And they can be all at the same time. But I will now tell you how to restore boot.ini, NTLDR, and NTDETECT.COM files.

If there are no files, the simplest thing you can do is copy these three files from the root directory “C:” of a working computer with a similar version of Windows to a floppy disk:

Files have the “hidden” attribute, to see them you need to call up the “Folder Properties” window through the “Tools” menu item in Windows Explorer;
In the “View” tab, put a marker next to “Show hidden files and folders” and uncheck “Hide protected system files.” Click “OK”;
After that, the files can be seen in the root folder “C:” and copy them from there to the diskette;
Configure in Bios setup the computer on which the error appears, boot from the drive;
Insert a diskette with files into the computer’s drive with an error;
Turn on the computer with an error (Windows will have to boot without errors);
Copy files from a floppy disk directly to the “C:” drive with the replacement of existing files.
By the way, the boot.ini file can be created independently in Notepad Windows. By default, for example, for Windows XP, it contains the following text:

[boot loader]
timeout = 30
default = multi (0) disk (0) rdisk (0) partition (1) WINDOWS
[operating systems]
multi (0) disk (0) rdisk (0) partition (1) WINDOWS = “Microsoft Windows XP Professional” / fastdetect

Now the second option. If you cannot copy these files from somewhere, but have a bootable Windows CD, then you should do the following:

Install in Bios setup boot from CD-Rom;
Insert a bootable CD with Windows, wait for a blue screen with a choice;
Press the “R” key to call the system recovery console;
The console will ask you to choose a system. You need to press the key “1”, then “Enter”;
The console will ask you to enter the administrator password. If not, just press “Enter”;
The line will be displayed:
C: WINDOWS
Further there are such options:

You can type fixmbr command:
C: WINDOWSfixmbr
This command will automatically replace the MBR (Master Boot Record) of the system partition with working copies of the files.
You can type fixboot command:
C: WINDOWSfixboot
This command will restore the boot sector of the disk if it was damaged during installation by another operating system.
You can also copy the NTLDR and NTDETECT.COM files from a CD / DVD-Rom to your hard drive as follows:
Type such file copy commands, if a file replacement request appears, press “Y” and “Enter” (e: is the letter CD / DVD-Rom):
copy e: i386 tldr c:
copy e: i386 tdetect.com c:
After copying, remove the Windows disc from the CD-Rom and restart the computer.
That’s it. If you have questions about this type of malfunction, write them in the comments.

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