Below you find a list of links for different topics. Tips for other useful links are welcome.

Boot disks and other tools
http://www.bootdisk.com

List of partition types
http://www.win.tue.nl/~aeb/partitions

FAT: General Overview of On-Disk Format
(Version 1.02, May 5, 1999, Microsoft Corporation)
http://staff.washington.edu/dittrich/misc/FatFormat.pdf

FAT32 File System Specification
(Version 1.03, December 6, 2000, Microsoft Corporation)
http://www.microsoft.com/whdc/system/platform/firmware/fatgen.mspx
http://www.win.tue.nl/~aeb/linux/fs/fat/fatgen103.pdf
http://staff.washington.edu/dittrich/misc/fatgen103.pdf