The below is for non-GPT drives mainly.  For GPT information, see:
                http://www.rodsbooks.com/gdisk/booting.html#Frame1
                http://en.wikipedia.org/wiki/BIOS_Boot_partition
                http://en.wikipedia.org/wiki/EFI_System_partition



Grub Legacy
===========
http://www.pixelbeat.org/docs/disk/



Grub 2
======
http://people.apache.org/~skitching/MineOfInformation/linux/Booting_Linux_on_x86_with_Grub2.html

    - "core.img" fills a similar spot to GRUB's Stage 1.5




SYSLINUX
========
https://wiki.archlinux.org/index.php/Syslinux#Syslinux_Boot_Process
http://www.syslinux.org/wiki/index.php/Boot_Stages



NTLDR
=====
http://thestarman.pcministry.com/asm/mbr/NTFSBR.htm
http://en.wikipedia.org/wiki/Windows_NT_startup_process
http://www.tburke.net/info/ntldr/ntldr_hacking_guide.htm
http://dralu.com/?p=275



BCD  (Windows Vista and later)
==============================
http://en.wikipedia.org/wiki/Windows_Vista_startup_process



Truecrypt
=========
http://yyzyyz.blogspot.com/2010/06/truecrypt-how-to-encrypt-multiple.html



VMWare ESX
==========
http://certcollection.org/forum/topic/44702-vmware-esx-server-boot-process/
    - some versions use LILO  (eg. ESX 2)
    - some versions use GRUB Legacy  (eg. ESX 4)


LILO
====
See the file "subpages/lilo_stages.txt" located alongside this file.

http://thestarman.pcministry.com/asm/mbr/LILOmbr.htm
http://linux.die.net/HOWTO/Large-Disk-HOWTO-5.html#ss5.1