Primary as you cannot boot from a logical partition.
Beginning.
Swap file allows allocating a small amount of Hard Drive space that can be used to Supplement RAM. This portion o the HDD will be used as additional RAM to your actual RAM.
I always wonder about this statement as it smacks of the square root of two.
Logic dictates that there is a limit, as there is a finite space available on the drive. There is a finite space in which the minimum amount of data can be applied, therefor, partitions cannot infinitely shrink to accommodate unlimited partitions.
Ok... but that does not explain the physicality of how it can be Unlimited (Or infinite).
Compared to Grahams Number, 100 is the same value as 1.
Compared to Infinity, Grahams Number is the same value as 1 (Though P.o.I., infinity is not a number.)