It is always a question in my mind what are the basic difference between ext2, ext3 and ext4 file systems & why we are only able create to four primary partition.
So here is the answer for you,
This article explains the following:
- High level difference between these file systems.
- How to convert from one file system type to another.
- Difference between MBR & GPT Partition Table.
Full article here:
Differences between Ext2, Ext3 and Ext4 file systems (Share our secret)
Linux File System (0x2c2b[N])
What is Ext2, Ext3 & Ext4 and How to Create and Convert Linux File Systems (Tecmint)