What is a complete disk defrag?
Complete defrag consists of 9 steps: 1. Shutting down running processes. 2. Disabling and removing the paging file. 3. Disabling and removing the hiber file 4. Running Windows Scandisk utility. 5. Running Windows Defrag Disk utility. 6. Running PC Mesh Disk optimizer 7. Restarting the running processes. 8. Enabling paging file. 9. Enabling hiber file. 10. Restarting/shutting down the PC. All the steps are necessary for a satisfactory result.