I am very new to Ubuntu, and I apologize beforehand if my terminology is incorrect. I'm constantly learning new things with all of this! I am working with Ubuntu 14.04 (I believe.) LTS.
I read very thorough instructions for using manual partitioning at Ubuntu installation titled: "How to Use Manual Partitioning During Installation?" Although I found this extremely helpful (even the additional comments), I am still confused about part of this process.
In the steps for using manual partitioning on a clean disk, it was recommended to assign the "/" root fs as logical. However, at the end of the instructions, it was suggested that for MBR scheme disks "/" root fs be assigned as primary.
The computer I am working on did, at one point, have an MBR partition set-up on it. However, after several mishaps, the partitions that were automatically placed, were wiped out. From what I can tell, the hard disk no longer has any such partitions.
My questions are in regards to the "/" root fs partition, the (optional) "/boot" partition, the "/tmp" partition, and the "/var" partition. In the step-by-step instructions that I read, initially it was instructed to set "/" root fs to logical. Later it was recommended to set this partition to primary for MBR schemed disks.
Given my hard disks current state, am I better off (or is it recommended) to set "/" root fs as primary or logical? Could anyone please explain (in a way I might easily understand) the difference between primary and logical partition types? Which type(s) would I then set the "/boot", "/tmp", and "/var" partitions?