Utilizing Unused Memory with Virtualization

In modern personal computers, a portion of system memory often remains unused, as average users rarely reach the full hardware capabilities of their systems during typical tasks. With the growing share of systems equipped with 16-32 GB of RAM, a significant number of computers now possess substantial amounts of unused memory that common activities, such as web browsing, document editing, or multimedia consumption, do not fully exploit. This surplus can be effectively utilized through virtualization, enabling the creation of virtual environments in which additional operating systems, server services, or development platforms can be run. Such an approach increases hardware utilization without incurring additional costs for physical equipment. This is particularly beneficial in educational institutions and development environments, where a single computer can, through virtualization, replace multiple standalone systems, thereby supporting more cost-effective and energy-efficient execution of educational or experimental activities. The paper presents a practical implementation of this virtualization concept using the open-source hypervisor Oracle VirtualBox.