What does "defrag.exe -c -i" do?

%windir%\system32\defrag.exe -c -i

I have this in my Task Scheduler and was wondering what the -c -i is
for? I have one drive seperated into 2 partitions (1 main, 1
backup). Does this command line defrag both C: & D:? Thanks for any
help.

Open an elevated Command Prompt, and type "defrag /?" to know more details about the parameters used and their description. To open an elevated Command Prompt, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.

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Microsoft Windows [Version 6.0.6000]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Windows\system32>defrag /?
Description: Locates and consolidates fragmented files on local volumes to
improve system performance.

Syntax: defrag <volume> -a [-v]
defrag <volume> [{-r | -w}] [-f] [-v]
defrag -c [{-r | -w}] [-f] [-v]

Parameters:

Value Description

<volume> Specifies the drive letter or mount point path of the volume to
be defragmented or analyzed.

-c Defragments all volumes on this computer.

-a Performs fragmentation analysis only.

-r Performs partial defragmentation (default). Attempts to
consolidate only fragments smaller than 64 megabytes (MB).

-w Performs full defragmentation. Attempts to consolidate all file
fragments, regardless of their size.

-f Forces defragmentation of the volume when free space is low.

-v Specifies verbose mode. The defragmentation and analysis output
is more detailed.

-? Displays this help information.

Examples:

defrag d:
defrag d:\vol\mountpoint -w -f
defrag d: -a -v
defrag -c -v

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--
Regards,

Ramesh Srinivasan, Microsoft MVP [Windows Shell/User]
Windows® Troubleshooting http://www.winhelponline.com


"bryantyler" <> wrote in message news: ups.com...
%windir%\system32\defrag.exe -c -i

I have this in my Task Scheduler and was wondering what the -c -i is
for? I have one drive seperated into 2 partitions (1 main, 1
backup). Does this command line defrag both C: & D:? Thanks for any
help.

no it only defrags the main drive lol



"bryantyler" <> wrote in message
news: ups.com...
> %windir%\system32\defrag.exe -c -i
>
> I have this in my Task Scheduler and was wondering what the -c -i is
> for? I have one drive seperated into 2 partitions (1 main, 1
> backup). Does this command line defrag both C: & D:? Thanks for any
> help.
>

This will defrag all of your volumes that are eligible for defrag.
So, yes, it will defrag both C: and D:.

If you are manually invoking a defrag using the command line, do not use
the -i flag. Just type "defrag -c"

Thanks,
Sam

"bryantyler" <> wrote in message
news: ups.com...
> %windir%\system32\defrag.exe -c -i
>
> I have this in my Task Scheduler and was wondering what the -c -i is
> for? I have one drive seperated into 2 partitions (1 main, 1
> backup). Does this command line defrag both C: & D:? Thanks for any
> help.
>

So nobody has found out what exactly the "-i" flag does?
It is not documented in the help description.


--
Marchy

Hi,

From what I've found. but cannot confirm is.......
-i makes defrag run in the background and only if the computer is idle

--
All the best,
SG

Is your computer system ready for Vista?
https://winqual.microsoft.com/hcl/

"Marchy" <> wrote in message
news:...
>
> So nobody has found out what exactly the "-i" flag does?
> It is not documented in the help description.
>
>
> --
> Marchy

http://blogs.technet.com/filecab/arc...arameters.aspx


"Marchy" <> wrote in message
news:...
>
> So nobody has found out what exactly the "-i" flag does?
> It is not documented in the help description.
>
>
> --
> Marchy