Troubleshooting Hard Drives and RAID Arrays (part 2) Now we'll examine issues and common issues with RAID disk and why they occur. You'll learn how incorrect settings or poor cabling may cause a RAID not to be found or to stop working, and what you need to do to resolve that. You'll learn about the CMOS battery that lives on the motherboard, and how its failure can trigger a BIOS reset or what happens when the RAID Controller or driver fails and how to correct troubleshoot those events. We'll discuss in detail some of the tasks and diagnostic utilities that will help you troubleshoot and repair hard drive issues such as CHKDSK. After completing this lesson you know when to use a given task and utility, how to correctly use them, as well as the advantages and limitations and how to work around them.