Ext3 is a type of computer file system. Just like how we keep our clothes in a closet to keep them organized, the computer keeps all its files and folders in a file system to keep them organized.
Think of the file system as a big neighborhood with lots of houses. Each house represents a file. The address of the house is the file's location in the file system. Ext3 is like a street in that neighborhood. It helps organize the houses (or files) by providing rules and guidelines on how they can be accessed and what can be done with them.
Ext3 has some special features that make it popular. It is reliable and can recover from errors. It can also handle large files and disks. Think of it like a trusty superhero who saves the day if something goes wrong with your computer's files.
Overall, Ext3 is an important part of your computer's file system, and it helps keep your files organized and safe.