NTLDR - Boot.ini -NTDETECT missing

October 2016

NTLDR is the boot loader for Windows Explorer 7 operating systems which are NT based. In addition to the boot loader, NTLDR also requires NTDETECT for successful operation. Sometimes users may get an error saying NTLDR, boot.ini. or NTDETECT missing. To get around this error one has to start the repair using the recovery console. The user can repair the operating system using the installation CD. There are, however, ways in which users can prevent this problem from happening. One way is to create a system boot disk and copy the NTLDR, boot.ini and NTDETECT.

You have a message warning you that one of these files is missing:

NTLDR is missing     
NTLDR manque. Entrez CTRL+ALT+SUPPR pour redémarrer     
NTLDR is compressed. Press CTRL-ALT-DEL to restart     
NTLDR est compressé. Press CTRL-ALT-DEL to restart     
NTDETECT V1.0 Checking Hardware ...     
NTDetect Failed     
Boot.ini invalid     
Invalid Boot.ini

NOTE THAT these files are vital to boot! NTLDR (NT Loader) is the library to load the Windows kernel at boot.

Recovery Console

Start with the repair console (press the F10 key at startup or boot disk to install Windows). At the command prompt type "fixboot C:" and press enter.

Restart the system. (Do not forget the space between and fixboot C:)

Repair XP

Try to repair Windows by booting the installation CD and then pressing "R" to request a system repair.

Recovery from the Windows CD

Start from the Windows CD and choose the option "r". At the command prompt, type the following commands:
X (where X: is the drive letter of your CD-ROM)      
cd i386     
copy ntldr c:     
copy ntdetect.com c:

Prevention method

Create a system boot disk (CD +/-R). Copy over the NTLDR, boot.ini and NTDETECT files.
When a file is missing, boot from the CD, then in the command prompt type:
copy ntldr c:

More info

Related :

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