Member Avatar for vavazoom

I've been trying to defrag my local disk C, however it only shows the D drive. Even when I right click on C and get to the defrag via properties it shows D only.

Any suggestions?

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  • Latest Post Latest Post by caperjack

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noted the built-in Disk Defragmenter only ever listed the D: volume; requested the OS/hardware details and suggested a third‑party tool. Before installing extra software, it helps to diagnose why Windows' tool is skipping the system volume so any fix targets the root cause rather than masking it.

Try these checks in order:

  1. Open Disk Management (run diskmgmt.msc) and confirm how the system/boot partition appears: does it have a drive letter, is the file system NTFS, and is the volume marked Healthy? Volumes without letters or those mounted as folders are commonly invisible to some GUI tools.

  2. Check the Disk Defragmenter service (run services.msc, look for "Disk Defragmenter" / DfrgSvc). If the service is disabled, set it to Manual or Automatic and start it, then re-open the defrag UI.

  3. Use the built‑in command line defragmenter to get a diagnostic message. From an elevated command prompt run:

    defrag C: /A
defrag C:

    The analyze step (/A) reports whether the volume is supported; any error text is a clue (for example, file system errors or unsupported volume types).

  4. Run a quick file‑system check (chkdsk C: /f) if the defrag command returns file system errors. Allow a scheduled run at boot if prompted.

  5. Confirm whether the C: volume is encrypted (BitLocker) or an SSD. Encrypted volumes need to be unlocked; SSDs typically should not be defragmented.

If the built‑in tool still refuses the C: volume after these diagnostics, using a reputable third‑party defragmenter (as suggested) is a reasonable fallback. Useful diagnostics to capture for deeper troubleshooting are the Disk Management view and the exact text returned by defrag C: /A.

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Member Avatar for Biker920

OK now please post what OS and a little about what you have tried, also what you're computer is. Then someone will be along to assist be patient as we are short on volunteers due to summer activities. Later---

Member Avatar for vavazoom

I'm on a Fujitsu Lifebook T series, using Windows 7. I've just tried going through the disk defrager...and I do not see my local disk there. I've also tried right clicking on my C drive and going to the defrager via properties. Each time I only see the D drive.

Member Avatar for caperjack

hi,not sure why it only shows D:, try 3rd party defraggler,safe and free i use it regularly ,its from the makers of Ccleaner another great free program .
http://www.piriform.com/defraggler

Edited by caperjack because: n/a
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