I/O System Management

I/O System Management
the main of the o/s is to hide the H/W devices to the user. The I/O system consist of :-
(1) Memory Management component which include buffing caching and spooling.
(2) Device Driver Interface
(3) Driver for H/S devices.
Secondary Storage Management
The main purpose of the computer system is to execute programs. At first the program is loaded into
primary memory during execution. The main disadvantage of main memory is that it hold data are loast
when power is lost. Soc Computer System must provide secondary storage to back up main memory.
for the online storage medium we use disks. for the program data storage. The main aim of the computer
system is to make the proper management of the disk.
O/S is responsible for different disk management activities :-
(1) Free space Management
(2) Storage Allocation
(3) Disk Scheduling