87Verifying the condition of the storage devicesAs POST determines the system configuration, it tests for the presenceof each mass storage device installed in the system. As each device ischecked, its activity indicator should turn on green briefly. Check theactivity indicators for the hard drive(s), DVD-ROM drive, and any otherdevice you may have installed.If any of these indicators fail to light up, refer to related problemslisted in the “HDD activity indicator does not light” on page 88.Confirming loading of the operating systemOnce the system boots up, the operating system prompt appears onthe screen. The prompt varies according to the operating system. If theoperating system prompt does not appear, see “No characters appearon the display monitor” on page 91.
