The common abbreviation for a hard drive is HDD. Hard Disk Drive.
This helps reduce the confusion between the magentic data storage system and the display resolution marketing phrase.
But this doesn't sound like a retail product to me. While the concept of having a game and related data in its own partition would work for static retail kiosks or special ordered Wii (static as in the game selection remains constant), it's a poor idea for a dynamicly utilized Wii (games added and removed).
To resize or remove a game's partiation requires a whole reformatting of the hard disk. It's time consuming, easily corruptable and tough on a HDD's life span.
A standard directory system would be a superior method for dynamically used Wii's. Paritions could then be used to seperate game data, saved data, system files, online connectivity files, etc.... This way you could format a partiton (delete everything) without losing all data and you'd not have to worry about the size or complete remove of a partition.
The rEVOLution is not being televised
