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I am working on migrating data across many disparate drives onto one massive Windows 8 Storage Space.

Problem I have is that many of my programs reference various drive letters to acces their libraries, files, music, movies, etc.

Is there any way I can, for example, have any reference of drives D, E, F, and G all point to the new drive S:?

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up vote 9 down vote accepted

Yes, use the subst command in the command line: subst NewLetter: OldLetter:\

For example, to assign the current C: drive the letter H: as well: subst H: C:\

See subst /? for more info.

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.
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Awesome, I was going to suggest mklink, but this works just fine. –  Caleb Jares Oct 28 '12 at 7:18
    
@cable729 That would not be possible. Directory junctions and symlinks are NTFS features, so you cannot assign a drive label as a link. –  Bob Oct 28 '12 at 7:22
    
I successfully created a link from C:\d to D:\ –  Caleb Jares Oct 28 '12 at 7:22
    
@cable729 But you cannot link C: (the label) to D:. You linked a folder to a drive, not a drive label to a drive. Also, this requires an NTFS partition mounted as C: to put the link on, which defeats the purpose of consolidating drives as in the question (since the whole point is to reduce the number of partitions/combine data on one partition). –  Bob Oct 28 '12 at 7:25
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