When I install Ubuntu and tell it to use the first full disk, it creates the following partitions, numbered 1 and 5:
sda1 / sda5 swap
When I create two partitions manually, the partitions are numbered 1 and 2:
sda1 / sda2 swap
I believe this is because Ubuntu creates an extended partition, and then creates the swap partition in the new extended partition.
GParted (or similar), how would one create a partition table exactly the same as the Ubuntu installer? How do I retain the default numbering style?