Operating Systems from scratch - Part 1
Operating Systems from scratch - Part 1 is an online course from Udemy in Ethical Hacking. It is structured in 9 modules with 8 stated learning outcomes, over 8.5 hours. It costs ₹469, certificate included. Learners rate it 4.6/5 from 6.3K ratings on Udemy, with 35.3K enrolled.
Part of our Ethical Hacking courses collection, where we compare it against 17 other courses. See all Ethical Hacking courses on Udemy.
Course highlights
| Provider | Udemy |
| Duration | 8.5 hours |
| Level | All Levels |
| Mode | Self-paced |
| Language | English |
| Certificate | Yes — shareable certificate |
| Instructor | Vignesh Sekar |
| Rating | 4.6★ (6.3K reviews) |
| Learners | 35.3K |
| Price | ₹469 ₹3,289 |
What you’ll learn
Level and time commitment
Skills you’ll gain
What this course covers
9 modulesThe 9-part outline Udemy publishes for this course, across 8.5 hours.
Module 1 · Introduction
Module 2 · Introduction to Operating Systems
Module 3 · Operating System Concepts
Module 4 · CPU Scheduling Algorithms - SJF, SRTF, FCFS
Module 5 · Comparision of FCFS, SJF and SRTF - Advantages and Disadvantages
Module 6 · CPU Scheduling Algorithms - LJF, LRTF, Priority-based, HRRN
Module 7 · Basics of Number System
Module 8 · Memory Allocation Techniques
Module 9 · Bonus : How to proceed further
What learners rate it
Rated 4.6/5 by 6.3K learners on Udemy (checked 6 Oct 2026).
This rating is collected by Udemy from its own enrolled learners. We reproduce it as reported and do not accept paid or incentivised reviews. See it on Udemy →
Compiled by the CoursesGlobal editorial desk. Fees, ratings, duration and certificate details for the 1 course shown are read directly from Udemy course pages — we never estimate a price or a rating. Last verified 6 October 2026.
How we compare and rank courses · Our review policy · Affiliate disclosure
Compare with alternatives
Same topic, different trade-offs — here's who runs each one and what it's best at.
| Course | Provider | Rating | Price | Duration | Why pick this one | |
|---|---|---|---|---|---|---|
| Operating Systems from scratch - Part 1 This |
 Udemy
|
4.6★ | ₹469 | 8.5 hours | Most popular — 35.3K learners | |
| TryHackme | Ethical Hacking & Cyber Security Skill Enhancer |
Udemy
|
4.8★ | ₹449 | 4.5 hours | Highest rated (4.8★ from 23 reviews) | View ↗ |
| EC-Council: Ethical Hacking Essentials (EHE) |
|
4.7★ | Free | 1 week | Free — and still gives a certificate | Start free ↗ |
| Real-World Ethical Hacking: Hands-on Cybersecurity |
Udemy
|
4.7★ | ₹619 | 11 hours | Beginner-friendly · 11 hours | View ↗ |
Where Ethical Hacking leads
Roles we map to Ethical Hacking on CoursesGlobal. This is our own mapping of subject to job, not a placement claim by Udemy.
Browse every course we track for one of these — courses for cyber security analysts.
Common questions
How much does Operating Systems from scratch - Part 1 cost?
It is listed at ₹469 on Udemy, last checked 6 October 2026. Course prices change and providers run discounts, so treat this as the list price and confirm on the provider page.
Does Operating Systems from scratch - Part 1 come with a certificate?
Yes — Udemy lists a certificate on completion. It is a course certificate, not a formal qualification or university credit.
How long does Operating Systems from scratch - Part 1 take?
Udemy lists it at 8.5 hours. It is self-paced, so that is the volume of material rather than a deadline — how long it actually takes depends on the hours you put in each week.
Is Operating Systems from scratch - Part 1 suitable for beginners?
Udemy lists it as suitable for all levels, so beginners and people brushing up work through the same material.
What does Operating Systems from scratch - Part 1 cover?
It is organised into 9 modules, starting with Introduction and going on to Introduction to Operating Systems, Operating System Concepts, CPU Scheduling Algorithms - SJF, SRTF, FCFS, Comparision of FCFS, SJF and SRTF - Advantages and Disadvantages, among others. The full outline is on this page.
Who teaches Operating Systems from scratch - Part 1?
Vignesh Sekar, as listed by Udemy.