Memory Management Notes – Partitioning, Paging, Segmentation & Virtual Memory

This unit covers memory management from basic partitioning to virtual memory. It explains Static and Dynamic Memory Partitioning with a worked allocation example, followed by First/Best/Worst Fit algorithms shown through before/after diagrams. Free Space Management (Bit Map, Linked List), Swapping, and Internal/External Fragmentation are explained, along with Compaction as a fragmentation fix. The notes then cover Paging, Segmentation, and a clear comparison between the two. The unit closes with Virtual Memory, Page Faults, and a fully solved numerical comparing FIFO, LRU, and Optimal Page Replacement Algorithms on the same reference string, with total page fault counts for each.