Computer Hope
Computer Hope: Computer Hard Disk Drives
Informative site detailing the use of computer hard disk drives. Content includes a focus on hard disk drive ABCs, hard drive specifications, hard drive interfaces, size information, debug routines, hard drive troubleshooting, hard disk...
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Imperial College London: Basic Troubleshooting Guide
Check out this extensive, but straightforward troubleshooting guide for computers.
Computer Hope
Computer Hope: Computer Operating Systems
This site contains general information about operating systems as well as troubleshooting help for a variety of operating systems.