We begin with our primary partitions. Primary partitions are intended for operating systems only, although other files are sometimes placed in the primary partitions. Our objective in organizing your hard drive is to move all of these other files out of the primary partition, leaving only the operating system in that partition.
This will let the primary partition that contains only the operating system be quite small. You may be able to keep it under 1GB, but you can certainly keep it under 2GB in size. This small size will permit more than one operation systems in primary partitions to be located on the beginning of your first hard drive. Some operating systems must be within the first 8GBs of the beginning of your first hard drive. This lets us prepare for future needs in this area.