How To Create Primary Extended Logical Linux windows File System

Whenever we create the file system. it will create the Primary Partition,Extended Partition,Logical Partition, it is applicable for all Linux and Windows Operation System,
Primary Paritition>> Operating System will be install. We will create the four primary partition.
Then Extended Partition will be created. under these extended partition Logical partition will be create.
For Example If we create the extended partition up to 4GB.Under the 4GB we can create the Logical Partition.Like
LogVol00 / ext3
LogVol01 swap
/dev/sda1 /boot

If we create the custom Layout it will create the partition like following
/dev/sda1 / ext3
/dev/sda2 /usr ext3
/dev/sda3 swap
/dev/sda4 Extended
/dev/sda5 /disk3 ext3
/dev/sda6 /disk2 ext3
Here /dev/sda4 is Extended under these Extended we /dev/sda5,6 these two logical partition will be create.