diff --git a/content/roadmaps/101-backend/content/102-os-general-knowledge/readme.md b/content/roadmaps/101-backend/content/102-os-general-knowledge/readme.md
index 286fe3ca8..802c6d809 100644
--- a/content/roadmaps/101-backend/content/102-os-general-knowledge/readme.md
+++ b/content/roadmaps/101-backend/content/102-os-general-knowledge/readme.md
@@ -4,5 +4,6 @@ Operating System is a program that manages a computer’s resources, especially
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What is an operating system?
+Operating System summary
Operating Systems: Crash Course Computer Science #18
-Introduction to Operating System
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+Introduction to Operating System