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  1. C:/OS Partition does not Show in Optimize and Defragment Drivew

    Jun 7, 2016 · The C: partition, which is the operating system partition on my primary hard disk drive, does not show in the partitions list in Optimize and Defragment Drives. This issue surfaced after …

  2. Performance and Maintenance on Windows 8.1 - Microsoft Community

    Sep 8, 2014 · A few days ago my computer automatically updated 8 to 8.1 and I now cannot find Performance and Maintenance in the Control Panel, and so cannot clean up isk space or …

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  7. Slow PC due to 100% Disk Usgae - Microsoft Community

    Aug 26, 2014 · Also i tried to use the drive optimization to defragment and optimize and still the issue is not resolved.

  8. C: drive-erratic free space. - Microsoft Community

    Dec 30, 2009 · Fragmentation makes your hard disk do extra work that can slow down your computer. Disk Defragmenter rearranges fragmented data so your hard disk can work more efficiently. Disk …

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