What Is an Operating System: Kernel, Shell & More | Computer Basics

What really happens when you power on your computer? In this video, we'll explore the world of operating systems — what they are, how they work and why they're essential. From the Kernel and Shell to filesystems, boot processes, user permissions and more, you'll learn how the OS acts as a bridge between hardware and software. We'll also look at different types of operating systems and uncover the key components that keep your device running smoothly. Whether you're new to tech or just want a clearer understanding of what powers your PC, this video breaks it all down in a simple and visual way.

📌 Chapters Covered:
- What Is an Operating System?
- Functions of an Operating System
- Kernel & Shell in OSs
- Different Types of Operating Systems
- OS Boot Process
- OS vs Firmware vs BIOS Comparison
- Filesystems & Storage
- User Management & Permissions

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Timestamps:
00:00 - Intro
00:20 - What Is an Operating System?
01:07 - Functions of an Operating System
01:57 - Kernel & Shell
03:05 - Types of Operating Systems
04:21 - OS Boot Process
05:14 - OS vs Firmware vs BIOS
06:00 - Filesystems & Storage
06:49 - User Management & Permissions
07:39 - Conclusions
08:27 - Outro

#whiteboarddoodles #operatingsystem #operatingsystems

[davidgrisez]

Since I was born in 1951 I have seen a lot of computer development over my lifetime. I have also seen and used a number of computer operating systems. One big trend is as computers became more powerful, with more memory, more cpu cores, more storage, and faster speed, the computer operating systems have increased and multiplied in size dramatically. The first computer I owned was a Heathkit H89 with a Z80 processor and 64k of memory. There were two operating systems that could be used on this computer. One was Heath Disk Operating System HDOS and CP/M Control Program Microcomputer. These two operating systems used around 8k to 16k of memory. Today I am using an Apple Mac Studio computer with 32 gb of memory and the Mac OS has 1.82 Gb of wired memory. That is a gigantic change over the years.

[NeoThabo]

Wow! This is a great video. Short, sweet amd very informitive.