Disk Operating System
(DOS) The original disk operating system from IBM.
DOS was the low-end OS of choice on the IBM 360, the high-end system was called just "OS". DOS had a smaller kernel and less functionality than OS and could run on the typical 32K 360/30 and 64K 360/40 class machines. DOS was a successor to TOS.Last updated: 1999-01-20
Nearby terms:
disk mirroring ♦ Disk Operating System ♦ disk operating system ♦ disks
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