Professional Windows Server 1002003 Security A Technical Reference [Electronic resources] نسخه متنی

Defragments local
drives.

Syntax

defrag Volume [/a] [/v] [/f]

Options

Volume

The drive letter or mount point of the volume to defragment

/a

Performs a fragmentation analysis only and displays a summary report

/v

Verbose analysis report

/f

Forces defragmentation even if free space is low

Examples

Check volume E: for fragmentation:

defrag e: /a
Windows Disk Defragmenter
Copyright (c) 2002 Microsoft Corp. and Executive Software International, 
Inc.
Analysis Report
502 MB Total,  60 MB (11%) Free,  1% Fragmented (2% file fragmentation)
You do not need to defragment this volume.

Get verbose information about fragmentation:

defrag e: /v
Windows Disk Defragmenter 
Copyright (c) 2002 Microsoft Corp. and Executive Software International, 
Inc.
Analysis Report
Volume size                         = 502 MB
Cluster size                        = 512 bytes
Used space                          = 442 MB
Free space                          = 60 MB
Percent free space                  = 11 %
Volume fragmentation
Total fragmentation                 = 1 %
File fragmentation                  = 2 %
Free space fragmentation            = 0 %
File fragmentation
Total files                         = 781
Average file size                   = 611 KB
Total fragmented files              = 8
Total excess fragments              = 19
Average fragments per file          = 1.02
Pagefile fragmentation
Pagefile size                       = 0 bytes
Total fragments                     = 0
Folder fragmentation
Total folders                       = 1,256
Fragmented folders                  = 1
Excess folder fragments             = 36
Master File Table (MFT) fragmentation
Total MFT size                      = 2 MB
MFT record count                    = 2,052
Percent MFT in use                  = 97
Total MFT fragments                 = 3

Defragment E: drive:

defrag e:
Windows Disk Defragmenter
Copyright (c) 2002 Microsoft Corp. and Executive Software International, 
Inc.
Analysis Report
502 MB Total,  60 MB (11%) Free,  1% Fragmented (2% file fragmentation)
Volume New Volume (E:) has only 11% free space available for use by Disk 
Defragmenter.  To run effectively, Disk Defragmenter requires at least 15% 
usable free space.  There is not enough disk space to properly complete the 
operation.  Delete some unneeded files on your hard disk, and then try 
again.

Force defragmentation even though free space is low:

defrag e: /f
Windows Disk Defragmenter
Copyright (c) 2002 Microsoft Corp. and Executive Software International, 
Inc.
Analysis Report
502 MB Total,  60 MB (11%) Free,  1% Fragmented (2% file fragmentation)
Defragmentation Report
502 MB Total,  60 MB (11%) Free,  0% Fragmented (0% file fragmentation)

Notes

• You can't run the defrag command
  and the Defragmenter tool in Computer Management at the same time.

• A minimum of 15% free space is required on volumes to completely
  defragment them. Forcing a defragmentation when there is less free
  space often results in partial defragmentation.

• To stop the defragmentation process, type Ctrl-C.

See Also

chkdsk, chkntfs,
convert, diskpart,

Disks , format,
label, mountvol