Re: 250MB space used when a new partition is created?
Also, partitions don't completely butt up against eachother. It's not like this:
[------Partition 1---------][------Partition 2-----]
It's more like this:
[------Partition 1---------]............[------Partition 2-----]
And then of course, the filesystem itself takes up space, and reserves space for itself. For every partition you create, you lose space due to the gap between partitions and also due to having a separate filesystem on each partition. I'm not saying "don't create multiple partitions", I'm just saying that it's one of the tradeoffs.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.