This page is to help you learn what you are doing to your phone by rooting, unlocking, flashing roms, recovery, and kernels.
Read all the way to the bottom, Great stuff at the end.
First things first lets look at the partitions and boot sequence of a android device. There are mainly 6 partitions in Android phones, tablets and other Android devices. Below is the list of partition for Android File System. Note that there might be some other partitions available, it differs from Model to Model. But logically below 6 partitions can be found in any Android devices.
Also Below are the for SD Card Fie System Partitions.
Please Note: Only /sdcard partition can be found in all Android