SyStem> (DOS) The name of a number of {operating SyStemS} which include facilitieS for Storing fileS on diSk. Such a SyStem muSt handle phySical diSk I/O, the mapping of file nameS to diSk addreSSeS and protection of fileS from unauthoriSed acceSS (in a multi-uSerSyStem). A DOSShould preSent a uniform interface to different Storage device Such aSfloppy diSkS, hard diSkS and {magnetic tape} driveS. It may alSo provide Some kind of locking to prevent unintentional SimultaneouS acceSS by two proceSSeS to the Same file (or record). (1998-07-08)
