Execution of a process OS places the process in a blocking state Piece of process that contains the logical address is brought into main memory OS issues a disk l/o Read request Another process is dispatched to run while the disk lo takes place An interrupt is issued when disk l/o complete which causes OS to place the affected process in the Ready state5 Execution of a Process • OS places the process in a blocking state • Piece of process that contains the logical address is brought into main memory – OS issues a disk I/O Read request – Another process is dispatched to run while the disk I/O takes place – An interrupt is issued when disk I/O complete which causes OS to place the affected process in the Ready state