How can Linux boot with NT?

NTLDR (abbreviation of NT Loader) is the boot loader for Windows NT, including its later versions (2000/XP/Server 2003 but not Vista, which divides the functionality of NTLDR between two new components: winload.exe and the Windows Boot Manager. NTLDR can be run from either portable storage (such as a CD-ROM or USB flash drive), or the primary hard disk. NTLDR can also load a non NT-based operating system given the appropriate boot sector in a file.