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Can't defrag the "C" drive

Anonymous
2011-01-02T06:43:52+00:00

I have a dell laptop (10 months old running Windows 7).  When I try to run defrag I see the two external hard drives and the "D" recovery drive on the defrag window list.  The Disk clean up, analysis and defrag work fine for those drives.  I do not see the "C" drive listed.  How do I get the "C" drive to show up on the defrag window list...?  I have the laptop set to defrage once a week.  I am now concerned that the "C" drive is not being defraged....perhaps for a long time now.  Any hints....?

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  1. Anonymous
    2011-01-11T23:11:03+00:00

    Hello,

    If this is an OEM computer, please attempt to run the hardware diagnostic test and verify the status of the HD.  In addition, please attempt to run Chkdsk /r /f.  Verify if you are able to see the drive in Disk Management.  How much free space do you have on your HD?  You will need at least 15% free space to run the Disk Defrag.

    **Step 1:**Click on start and then type “diskmgmt.msc” (without quotes) and press enter.

    Check if C drive is detected there. If it is detected there then run a Check disk and see if it finds some errors.

    Refer this link:

    http://windows.microsoft.com/en-US/windows7/Check-a-drive-for-errors

    Step 2:

    Try disk checking using Command Prompt.

    a. Click on start and then type “cmd” (without quotes) in the search box.

    b. Right click on the Command Prompt icon and select “Run as Administrator”.

    c. Type the following command and press enter button:

    chkdsk C: /f /r

    **Step 3:**Run Disk Defragmenter using Command Prompt.

    a. Click on start and then type “cmd” (without quotes) in the search box.

    b. Right click on the Command Prompt icon and select “Run as Administrator”.

    c. Type the following command and press enter button:

    defrag C: /a /u

    Step 4:

    Run SFC (System File Checker) scan.

    System File Checker (sfc) scan will make Windows replace corrupt or missing system files on your computer.

    Steps to perform sfc scan:

    1. Click Start, click All Programs, click Accessories, right-click Command Prompt, and select Run as Administrator.
    2. Click Continue or supply Administrator credentials if prompted.
    3. In the Command Prompt window type the following, and press Enter:

    sfc /scannow

    Refer this KB article for more information:

    http://support.microsoft.com/kb/929833

    Aaron

    Microsoft Answers Support Engineer

    Visit our Microsoft Answers Feedback Forum and let us know what you think

    10 people found this answer helpful.
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  1. Anonymous
    2016-09-16T08:05:12+00:00

    I tried this procedure but didn't work. It's still fragmented 16%

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  2. Anonymous
    2011-01-02T09:38:02+00:00

    Are you using the Disk Defragmenter that comes with Windows 7 or a third party defragmenter? The user interface that comes with the Microsoft provided utility is poor.

    Hope this helps, Gerry Cornell

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  3. Anonymous
    2011-01-02T08:55:40+00:00

    Theres no point in defraging the recovery drive, as you shouldnt be writing anything to that drive, you have made the recovery disks havent you?

    In the defrag window> configure schedule> select disks, de-select D can you now select C?

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