If you're going to use good old FFS on the drive then you need to have partisions no larger than 2Gb and a total of no more then 4Gb... So you need to partision that drive into at least two 2Gb partisions and then live with the loss off about 150Mb.
If you got DOpus you can quickly find out if you've made the size too big since it will present you with a negative size for the drive then.
