Variations in the system hardware are hidden by the BIOS from programs that use BIOS services instead of directly accessing the hardware. MS-DOS (PC DOS), which was the dominant PC operating system from the early 1980s until the mid 1990s, relied on BIOS services for disk, keyboard, and text display functions.
Definition of efflorescence. 1  1a : the action or process of developing and unfolding as if coming into flower : blossoming periods of â¦ intellectual and artistic efflorescence â Julian Huxleyb : an instance of such developmentc : fullness of manifestation : culmination. 2  2 : the period or state of flowering.
As moisture evaporates into the air, it leaves any mineral deposits carried with it behind, which forms a salt-like coating on the concrete. The ugly white powdery buildup is the efflorescence you see on your basement walls is that mineral salt. How to Clean Efflorescence Removing efflorescence is finest carried out with a power washer -- you can obtain a single at a nearby hardware store.