BOOTPART lets you add partitions to the Windows NT/2K/XP Multiboot menu. Usually, you will only have a MSDOS or Windows 95 entry and one (or several) Windows NT entries on this boot menu.
With BOOTPART, you may add any partition to the menu. You may add an OS/2 Multiboot partition, or a Linux Partition (with Lilo) to this menu.
BOOTPART creates a 512 byte file which contains an image of the boot sector that loads the boot sector of the partition. This file is declared in C:\BOOT.INI (text file used by Windows NT boot menu). The boot sector itself comes from FDFormat and WinImage.