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This is all I want to do:

Take Java, which is on a USB drive, and map it to my local C drive.

f:\java

and map it to

c:\java

Naturally, for obtuse reasons, I can't copy it. (there is no existing c:\java) If it were on a happy non-existent drive letter like w, this wouldn't be a problem, but it needs to be the local C drive.

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up vote 2 down vote accepted

You can mount a partition as a folder instead of a drive letter. For example, if your entire F drive was what you wanted, you can mount it as c:\Java instead of F.

This is done from the disk management console, which for example you can find in compmgmt.msc in XP Pro.

EDIT: Another option is the MKLINK command for Vista and above. It's a native cmd.exe command, so it's not PowerShell friendly.

    MKLINK /J c:\Java f:\Java
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Very close: if I didn't have other files I needed on the drive, I could, but I actually have two folders I need to mount on my c:\ that point to the f:\ – altCognito Mar 17 '11 at 14:37
1  
@altCognito If that's the case, you can try the MKLINK command, which is part of the cmd.exe shell in Vista and later. "MKLINK /J c:\Java f:\Java" should work. – Hyppy Mar 17 '11 at 14:46
1  
On Windows XP, directory junctions can be created using Junction instead of mklink. – grawity Mar 17 '11 at 16:26
1  
Ooh, good call on Junction. That must be a new one. Sysinternals to the rescue again! – Hyppy Mar 17 '11 at 16:32
    
Junction. That's the one that did the trick. – altCognito Mar 17 '11 at 18:25

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