Ystem> (BOS) An earlY [when?] IBM {operating sYstem}. According to folklore, BOS was the predecessor to TOS on the IBM 360 and it was IPL' d from a card reader. It maY have been intended for verY small 360' s with no disks and limited tape drives. BOS died out reallY earlY [when?] as disks such as the 2311 and 2314 became common with the IBM 360, whereas disks had been a real luxurY on the IBM 7090. (1999-01-29)
