Dooku's Story Disk 2
Jedi Master - The data disk describes Dooku's promotion to Jedi Knight and the training of padawans of his own, including Qui-Gon Jinn. Dooku was granted the rank of Jedi Master with Qui-Gon Jinn's successful passage from Padawan to Jedi Knight.
This appears to be the second most common of the disks and is part two of a series of five.
Possible loot locations: