Appendix D: Troubleshooting208Verifying proper operation of key system lightsAs POST determines the system configuration, it tests for the presenceof each mass storage device installed in the system. As POST checkseach device, the activity light for that device should turn on briefly.Check for the following:• Does the diskette drive activity light turn on briefly? If not, see"Diskette drive activity light does not light" on page 211.• Does the hard disk drive activity light on the control panel turn onbriefly? If not, see "Hard drive activity light does not light" onpage 211.Confirming loading of an operating systemOnce the system boots up, the operating system prompt appears onthe screen. The prompt varies according to the operating system. Ifthe operating system prompt does not appear, see "Initial systemstartup" on page 205.
