Virtual memory is a section of the hard drive that is used by the operating system to store data that does not fit in the computer’s physical memory. This allows the computer to run more programs and processes than it would be able to if it only had physical memory.
The size of the virtual memory can be increased or decreased depending on the needs of the computer. If the virtual memory is too small, the computer may start to slow down or freeze. If the virtual memory is too large, it can take up valuable hard drive space.