Dell PowerEdge M420 Hardware Owner's Manual - Page 298

6 Close the blade. See "Closing the Blade" on page 159. 7 Install the blade. See "Installing a Blade" on page 148. 8 Run the system memory test in the system diagnostics. See "Running System Diagnostics" on page 303. If the test fails, see "Getting Help" on page 337. Troubleshooting Hard Drives CAUTION: This troubleshooting procedure can destroy data stored on the hard drive. Before you proceed, back up all the files on the hard drive, if possible. Refer to the RAID controller documentation for rebuilding and servicing a RAID array. 1 Run the appropriate controllers test and the hard drive tests in system diagnostics. See "Running System Diagnostics" on page 303. If the tests fail, go to step 3. 2 Take the hard drive offline and wait until the hard-drive indicator codes on the drive carrier signal that the drive may be removed safely, then remove and reseat the drive carrier in the blade. See "Hard Drives" on page 247. 3 Restart the blade, enter the System Setup program, and confirm that the drive controller is enabled. See "Integrated Devices Screen" on page 133. 4 Ensure that any required device drivers are installed and are configured correctly. NOTE: Installing a hard drive into another bay may break the mirror if the mirror state is optimal. 5 Remove the hard drive and install it in the other drive bay. See "Hard Drives" on page 247. 6 If the problem is resolved, reinstall the hard drive in the original bay. If the hard drive functions properly in the original bay, the drive carrier could have intermittent problems. Replace the drive carrier. 7 If the hard drive is the boot drive, ensure that the drive is configured and connected properly. See "Configuring the Boot Drive" on page 249. 8 Partition and logically format the hard drive. 9 If possible, restore the files to the drive. If the problem persists, see "Getting Help" on page 337. 298 Troubleshooting Your System