Wednesday, September 7, 2016

Can't defrag the "C" drive

Can't defrag the "C" drive

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....?

Solutions to the Problem Can't defrag the "C" drive

Download Error Fixer (Free)

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:
Step 2:
Try disk checking using Command Prompt.
Click on start and then type “cmd” (without quotes) in the search box.
Right click on the Command Prompt icon and select “Run as Administrator”.
Type the following command and press enter button:
chkdsk C: /f /r
Step 3:
Run Disk Defragmenter using Command Prompt.
Click on start and then type “cmd” (without quotes) in the search box.
Right click on the Command Prompt icon and select “Run as Administrator”.
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:
Click Start, click All Programs, click Accessories, right-click Command Prompt, and select Run as Administrator.
Click Continue or supply Administrator credentials if prompted.
In the Command Prompt window type the following, and press Enter:
sfc /scannow
Refer this KB article for more information:

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Manually editing the Windows registry to fix Error Can't defrag the "C" drive

Caution: Unless you an advanced computer user, we DO NOT recommend editing the Windows registry manually. Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows. We do not guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

  • Click the Start button.
  • Type "command" in the search box... DO NOT hit ENTER yet!
  • While holding CTRL-Shift on your keyboard, hit ENTER.
  • You will be prompted with a permission dialog box.
  • Click Yes.
  • A black box will open with a blinking cursor.
  • Type "regedit" and hit ENTER.
  • In the Registry Editor, select the Error 0x9C-related key (eg. Windows Operating System) you want to back up.
  • From the File menu, choose Export.
  • In the Save In list, select the folder where you want to save the Windows Operating System backup key.
  • In the File Name box, type a name for your backup file, such as "Windows Operating System Backup".
  • In the Export Range box, be sure that "Selected branch" is selected.
  • Click Save.
  • The file is then saved with a .reg file extension.
  • You now have a backup of your MACHINE_CHECK_EXCEPTION-related registry entry.

Recommended Method to Fix the Problem: Can't defrag the "C" drive:

How to Fix Can't defrag the "C" drive with SmartPCFixer?

1. Download Error Fixer . Install it on your system.  Click Scan, and it will perform a scan for your computer. The errors will be shown in the scan result.

2. After the scan is done, you can see the errors and problems which need to be fixed.

3. The Repair part is done, the speed of your computer will be much higher than before and the errors have been removed. You can also use other functions in SmartPCFixer. Like dll downloading, junk file cleaning and print spooler error repair.

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