Disk Defrag Parameters.

Good evening,

Code:

C:\Windows\system32>defrag.exe /?
Microsoft Drive Optimizer
Copyright (c) Microsoft Corp.

Description:

        Optimizes and defragments files on local volumes to
        improve system performance.

Syntax:

        defrag <volumes> | /C | /E <volumes> [<task(s)>] [/H] [/M [n] | [/U] [/V]] [/I n]

        Where <task(s)> is omitted (traditional defrag), or as follows:
                /A | [/D] [/K] [/L] | /O | /X

        Or, to track an operation already in progress on a volume:
        defrag <volume> /T

Parameters:

        Value   Description
        /A      Perform analysis on the specified volumes.
        /C      Perform the operation on all volumes.
        /D      Perform traditional defrag (this is the default).  On a tiered volume
                though, traditional defrag is performed only on the Capacity tier.
        /E      Perform the operation on all volumes except those specified.
        /G      Optimize the storage tiers on the specified volumes.
        /H      Run the operation at normal priority (default is low).
        /I n    Tier optimization would run for at most n seconds on each volume.
        /K      Perform slab consolidation on the specified volumes.
        /L      Perform retrim on the specified volumes.
        /M [n]  Run the operation on each volume in parallel in the background.
                At most n threads optimize the storage tiers in parallel.
        /O      Perform the proper optimization for each media type.
        /T      Track an operation already in progress on the specified volume.
        /U      Print the progress of the operation on the screen.
        /V      Print verbose output containing the fragmentation statistics.
        /X      Perform free space consolidation on the specified volumes.

Examples:

        defrag C: /U /V
        defrag C: D: /M
        defrag C:\mountpoint /A /U
        defrag /C /H /V

C:\Windows\system32>

I am curious as to what Disk Defrag Parameters you use on a HDD [ NOT SSD ].

I have my HDD setup with the OS on C:\, Data on D:\, and System Images on S:\. Obviously they are ALL Backed Up else where using AOMEI.

I have Shortcuts in a Folder in my Toolbar for each of the above.

OS Drive:

Code:

%ComSpec% /k defrag.exe %SystemDrive% -u -v

Data Drive:

Code:

%ComSpec% /k defrag.exe D: -u -v

System Image Drive:

Code:

%ComSpec% /k defrag.exe S: -u -v

ALL Drives:

Code:

%ComSpec% /k defrag.exe /C -u -v

It is best to defrag OS disk outside of Windows.

Code:

Boot Windows USB - Repair - Troubleshoot - CMD - type/enter
c:
cd windows
cd system32
defrag c: /u

Thanks @TairikuOkami,

TairikuOkami said:

It is best to defrag OS disk outside of Windows.

Code:

Boot Windows USB - Repair - Troubleshoot - CMD - type/enter
c:
cd windows
cd system32
defrag c: /u

This is very odd. I initially used shutdown /r /o /f /t 00 to Boot into the Advanced Options and continued from there. The CMD Prompt was obviously X:\>. For some reason I could NOT get to the C:\Windows\System32 Prompt, with it saying that it was Unrecognisable.

I then Booted into the Installation USB, with the SAME results.

Thanks @FreeBooter,

FreeBooter said:

/B Optimizes boot files and applications but does not defragment the rest of the volume.

I do actually have that one [ /BootOptimize ] included, although it is NOT documented by MS as such. Technically, I assume that should also defrag the MFT and Boot Record files.

Paul Black said:

For some reason I could NOT get to the C:\Windows\System32 [/C].

During boot, partitions might be assigned different letters, so it might be D, E, etc.

Code:

diskpart
list volume

Thanks @TairikuOkami,

TairikuOkami said:

During boot, partitions might be assigned different letters, so it might be D, E, etc.

Code:

diskpart
list volume