Troubleshooting Your System 167b Ensure that the hard drive(s) have been configured correctly for theRAID array.c Take the hard drive offline and then reseat the hard drive. See"Removing a Hot-Swap Hard Drive."d Exit the configuration utility and allow the system to boot to theoperating system.4 Ensure that the required device drivers for your controller card are installedand are configured correctly. See the operating system documentation formore information.5 Restart the system, enter the System Setup program, and verify that thecontroller is enabled and the drives appear in the System Setup program.See "Using the System Setup Program and UEFI Boot Manager."If the problem persists, see "Troubleshooting a Storage Controller."Troubleshooting a Storage Controller. NOTE: When troubleshooting a SAS or PERC controller, also see thedocumentation for your operating system and the controller.1 Run the appropriate online diagnostic test. See "Using Dell™ PowerEdge™Diagnostics."2 Enter the System Setup program and ensure that the SAS or PERCcontroller is enabled. See "Using the System Setup Program and UEFIBoot Manager."3 Restart the system and press the applicable key sequence to enter theconfiguration utility program:• for a SAS controller• for a PERC controllerSee the controller's documentation for information about configurationsettings.4 Check the configuration settings, make any necessary corrections, andrestart the system.CAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service and