a portion of memory that you allocate to use as a
a virtual drive that allocates part of the system ram
a virtual hard disk that your operating system creates by setting aside a certain amount of your RAM
a virtual volume which lives completely in the RAM, so all data stored in it will be gone after shutdown
A portion of physical memory configured to look like a physical disk but capable of fast access times. Data written to a ramdisk is lost when the operating system is shut down. Ramdisks are, therefore, only suitable for implementing temporary filesystems.