Definition: NTLDR (NT Loader) is a small piece of software, called a boot loader, that's loaded from the volume boot code, part of the volume boot record, which helps your Windows XP operating system start.
If you have multiple operating systems installed and properly configured, NTLDR will show a boot menu when your computer starts, allowing you to choose which operating system to start.
A common startup error in Windows XP is the NTLDR is Missing error.
Also Known As: NTLDR
Examples:
"Since I only have one operating system on my Windows XP PC, I never see the NTLDR boot menu."

