Sunday, 25 May 2014

Operating System Features


                    Operating System Features


  • Operating system must be made available to hardware

          so hardware can start it

  • Small piece of code – bootstrap loader, locates the

          kernel, loads it into memory, and starts it

  • Sometimes two-step process where boot block at

         fixed location loads bootstrap loader

  • When power initialized on system, execution starts

          at a fixed memory location

  • Firmware used to hold initial boot code