Learn how virtual memory extends the use of physical memory by using disk and provides memory protection. Explore the demand paging system, page replacement algorithms and their advantages and disadvantages. Learn about virtual memory , a memory management technique that creates the illusion of a very large main memory . Find out its properties, usage, history, and how it works with hardware and software. Learn what virtual memory is and how it supplements physical RAM by using a page file on your hard drive. Follow the steps to manually adjust the virtual memory size for optimal system performance. Virtual memory is a memory management technique used by operating systems to give the appearance of a large, continuous block of memory to applications, even if the physical memory (RAM) is limited and not necessarily allocated in contiguous manner.
