Basic Operating System
Basic Operating System
(operating system)According to folklore, BOS was the predecessor to TOS on theIBM 360 and it was IPL'd from a card reader. It mayhave been intended for very small 360's with no disks andlimited tape drives.
BOS died out really early s disks such as the 2311and 2314 became common with the IBM 360, whereas disks hadbeen a real luxury on the IBM 7090.