Linux File Systems : What, Why and How

In operating system, file system is a strategy used for storing data in storage devices. There are numerous number of file systems developed for different platforms. Each file system differ by their approach, security policies, organization ..etc. An article written by Narad Shrestha, published in tecmint magazine gives an overview of popular file systems used in GNU/Linux platform. These file systems includes ext2, ext3, and ext4. This article also explains about creating file systems and converting among them.

I have used my Fedora old system to test where I converted from ext2 to ext3, ext2 to ext4 and ext3 to ext4 file systems successfully. By following this guide anyone can convert their file systems smartly, but still I like to WARN you’ll before doing this, because the following task required skilled administrative practices and make sure you must take important backup of your files before doing this. If in case something goes wrong at least you can revert to back with your backup data.

In a computer, a file system is the way in which files are named and placed logically to store, retrieve and update the data and also used to manage space on the available devices.
File system is divided in two segments called User Data and Metadata. In this article I am trying to explore how to create and convert various Linux file systems and high level difference amongst Ext2, Ext3 and Ext4 file systems. Before moving further readings, let me introduce a brief about Linux file systems.

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