Yes, you can do it all from the Xbox.
There are better ways to get
AID - and 4.41 is the latest version. You get AID 4.40, then the 4.41 update pack.
You don't have to use two extended partitions nomatter what size the disk is - you can choose to put all of your space into one large F partition, or split it into F and G. the standard schemes are
- F up to 137GB, G gets the rest
- 50:50 F:G
- All F
You can also manually split the space between F and G in any ratio you like. The first 8GB of the disk is allocated to C,E,X,Y and Z, the rest is available for you to split as you want. If F or G is larger than 256GB then you have to use 32K clusters on that partition, if they are larger than 512k then you have to use 64k clusters - but XBPartitioner 1.1 does that for you automatically.