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cmd line msdos hdd

Displays the disk volume label and serial number, if they exist.

VOL [drive:]

Tells cmd.exe whether to verify that your files are written correctly to a


Type VERIFY without a parameter to display the current VERIFY setting.

Recovers readable information from a bad or defective disk.

RECOVER [drive:][path]filename
Consult the online Command Reference in Windows XP Help
before using the RECOVER command.

Changes to the directory stored by the PUSHD command.


If Command Extensions are enabled the POPD command will delete
any temporary drive letter created by PUSHD when you POPD that
drive off the pushed directory stack.

Copies the contents of one floppy disk to another.

DISKCOPY [drive1: [drive2:]] [/V]

  /V   Verifies that the information is copied correctly.

The two floppy disks must be the same type.
You may specify the same drive for drive1 and drive2.

Associates a path with a drive letter.

SUBST [drive1: [drive2:]path]
SUBST drive1: /D

  drive1:        Specifies a virtual drive to which you want to assign a path.
  [drive2:]path  Specifies a physical drive and path you want to assign to
                 a virtual drive.
  /D             Deletes a substituted (virtual) drive.

Type SUBST with no parameters to display a list of current virtual drives.

Creates, changes, or deletes the volume label of a disk.

LABEL [drive:][label]
LABEL [/MP] [volume] [label]

  drive:          Specifies the drive letter of a drive.
  label           Specifies the label of the volume.
  /MP             Specifies that the volume should be treated as a
                  mount point or volume name.
  volume          Specifies the drive letter (followed by a colon),
                  mount point, or volume name.  If volume name is specified,
                  the /MP flag is unnecessary.

Stores the current directory for use by the POPD command, then
changes to the specified directory.

PUSHD [path | ..]

  path        Specifies the directory to make the current directory.

If Command Extensions are enabled the PUSHD command accepts
network paths in addition to the normal drive letter and path.
If a network path is specified, PUSHD will create a temporary
drive letter that points to that specified network resource and
then change the current drive and directory, using the newly
defined drive letter.  Temporary drive letters are allocated from
Z: on down, using the first unused drive letter found.

Converts FAT volumes to NTFS.

CONVERT volume /FS:NTFS [/V] [/CvtArea:filename] [/NoSecurity] [/X]

  volume      Specifies the drive letter (followed by a colon),
              mount point, or volume name.
  /FS:NTFS    Specifies that the volume is to be converted to NTFS.
  /V          Specifies that Convert should be run in verbose mode.
              Specifies a contiguous file in the root directory to be
              the place holder for NTFS system files.
  /NoSecurity Specifies the converted files and directories security
              settings to be accessible by everyone.
  /X          Forces the volume to dismount first if necessary.
              All opened handles to the volume would then be invalid.

Displays or modifies the checking of disk at boot time.

CHKNTFS volume [...]
CHKNTFS /T[:time]
CHKNTFS /X volume [...]
CHKNTFS /C volume [...]

  volume         Specifies the drive letter (followed by a colon),
                 mount point, or volume name.
  /D             Restores the machine to the default behavior; all drives are
                 checked at boot time and chkdsk is run on those that are
  /T:time        Changes the AUTOCHK initiation countdown time to the
                 specified amount of time in seconds.  If time is not
                 specified, displays the current setting.
  /X             Excludes a drive from the default boot-time check.  Excluded
                 drives are not accumulated between command invocations.
  /C             Schedules a drive to be checked at boot time; chkdsk will run
                 if the drive is dirty.

If no switches are specified, CHKNTFS will display if the specified drive is
dirty or scheduled to be checked on next reboot.

Checks a disk and displays a status report.

CHKDSK [volume[[path]filename]]] [/F] [/V] [/R] [/X] [/I] [/C] [/L[:size]]

  volume          Specifies the drive letter (followed by a colon),
                  mount point, or volume name.
  filename        FAT/FAT32 only: Specifies the files to check for fragmentation.
  /F              Fixes errors on the disk.
  /V              On FAT/FAT32: Displays the full path and name of every file
                  on the disk.
                  On NTFS: Displays cleanup messages if any.
  /R              Locates bad sectors and recovers readable information
                  (implies /F).
  /L:size         NTFS only:  Changes the log file size to the specified number
                  of kilobytes.  If size is not specified, displays current
  /X              Forces the volume to dismount first if necessary.
                  All opened handles to the volume would then be invalid
                  (implies /F).
  /I              NTFS only: Performs a less vigorous check of index entries.
  /C              NTFS only: Skips checking of cycles within the folder

The /I or /C switch reduces the amount of time required to run Chkdsk by
skipping certain checks of the volume.

Displays or alters the compression of files on NTFS partitions.

COMPACT [/C | /U] [/S[:dir]] [/A] [/I] [/F] [/Q] [filename [...]]

  /C        Compresses the specified files.  Directories will be marked
            so that files added afterward will be compressed.
  /U        Uncompresses the specified files.  Directories will be marked
            so that files added afterward will not be compressed.
  /S        Performs the specified operation on files in the given
            directory and all subdirectories.  Default "dir" is the
            current directory.
  /A        Displays files with the hidden or system attributes.  These
            files are omitted by default.
  /I        Continues performing the specified operation even after errors
            have occurred.  By default, COMPACT stops when an error is
  /F        Forces the compress operation on all specified files, even
            those which are already compressed.  Already-compressed files
            are skipped by default.
  /Q        Reports only the most essential information.
  filename  Specifies a pattern, file, or directory.

  Used without parameters, COMPACT displays the compression state of
  the current directory and any files it contains. You may use multiple
  filenames and wildcards.  You must put spaces between multiple

Formats a disk for use with Windows XP.

FORMAT volume [/FS:file-system] [/V:label] [/Q] [/A:size] [/C] [/X]
FORMAT volume [/V:label] [/Q] [/F:size]
FORMAT volume [/V:label] [/Q] [/T:tracks /N:sectors]
FORMAT volume [/V:label] [/Q]
FORMAT volume [/Q]

  volume          Specifies the drive letter (followed by a colon),
                  mount point, or volume name.
  /FS:filesystem  Specifies the type of the file system (FAT, FAT32, or NTFS).
  /V:label        Specifies the volume label.
  /Q              Performs a quick format.
  /C              NTFS only: Files created on the new volume will be compressed
                  by default.
  /X              Forces the volume to dismount first if necessary.  All opened
                  handles to the volume would no longer be valid.
  /A:size         Overrides the default allocation unit size. Default settings
                  are strongly recommended for general use.
                  NTFS supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K.
                  FAT supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K,
                  (128K, 256K for sector size > 512 bytes).
                  FAT32 supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K,
                  (128K, 256K for sector size > 512 bytes).

                  Note that the FAT and FAT32 files systems impose the
                  following restrictions on the number of clusters on a volume:

                  FAT: Number of clusters <= 65526
                  FAT32: 65526 < Number of clusters < 4177918

                  Format will immediately stop processing if it decides that
                  the above requirements cannot be met using the specified
                  cluster size.

                  NTFS compression is not supported for allocation unit sizes
                  above 4096.

  /F:size         Specifies the size of the floppy disk to format (1.44)
  /T:tracks       Specifies the number of tracks per disk side.
  /N:sectors      Specifies the number of sectors per track.

Compares the contents of two floppy disks.

DISKCOMP [drive1: [drive2:]]


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