<b>Memory Management in Operating System</b> In the recent era of computing, applications an operating system cannot survive without efficient memory management, especially if an application has to be under Surve load for an undefined long time. Resources must be utilized efficiently to enhance performance. This paper describes about the memory management in an operating system and it will demonstrate basic architecture of segmentation in an operating system and basic of its allocation. This paper also describes about the basic concept of virtual memory management and dynamic memory management. Memory, Allocation, Segmentation, Support in segmentation 2346-2347 Issue-5 Volume-2 Durgesh Raghuvanshi