140 Troubleshooting Your SystemTroubleshooting a Hard DriveCAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.CAUTION: This troubleshooting procedure can destroy data stored on thehard drive. Before you proceed, back up all files on the hard drive.1 Run the appropriate online diagnostics test. See "Using OnlineDiagnostics" on page 147.Depending on the results of the diagnostics test, proceed as neededthrough the following steps.2 If installed, remove the front bezel. See "Removing the Front Bezel" onpage 65.3 If your system has a RAID controller and your hard drives are configured ina RAID array, perform the following steps:a Restart the system and enter the host adapter configuration utilityprogram by pressing for a PERC controller or for a SAS controller.See the documentation supplied with the host adapter for informationabout the configuration utility.b Ensure that the hard drive(s) have been configured correctly for theRAID array.c Take the hard drive offline and reseat the drive. See "Removing a Hot-Swap Hard Drive" on page 70d 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.
