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I have a Dell Inspiron Ultrabook running Windows 8.1 (64-bit). In File Explorer, I click on Drive C Properties -> Tools -> Optimize. There I see 4 drives listed as follows:
- OS (C:) -- OK (0% fragmented)
- PBR Image -- OK (0% fragmented)
- WINRETOOLS -- OK (0% fragmented)
- \\?\Volume{6e84d74b-fb3c-4a0e-9662-694d4192fb09}\ -- Needs optimization (94% fragmented)
If I select the "...{6e84d74b..." drive volume, and click the Optimize button to try to run Defrag on it, nothing happens except that an error appears in Event Viewer -> Windows Logs -> Application Log. The error that gets logged there is as follows:
Error, Event ID 257, Source: Defrag, The volume \\?\Volume{6e84d74b-fb3c-4a0e-9662-694d4192fb09}\ was not optimized because an error was encountered: The parameter is incorrect. (0x80070057)
Note that this system has two entries in Device Manager under Disk Drives as follows:
- SSD PM830 mSATA (Disk 1, with 1 volume listed)
- ST500LT012-9WS1 (Disk 0, with 5 volumes listed)
Unfortunately, I don't know how to tell if the "...{6e84d74b..." drive volume resides on the SSD (Disk 1) or the HDD (Disk 0). If there's a way to figure that out, I'd like to know.
So, I actually have several questions here:
- What is this drive volume used for; and does it really matter that it's fragmented?
- If it does matter, then how can I go about defragging it?
- In the logged error event, exactly which "parameter" is incorrect?
- How can I tell which physical drive this volume is located on?
Use
mountvol
to mount the volume and give it a drive letter. – DavidPostill – 2015-09-19T22:57:40.360