Persistent Subst’s – With a quick reg-hack you can use to make persistent SUBST drives

If you have touched DOS before, you might still remember what this old school command subst is all about. It’s a command used for substituting local paths on physical and logical drives, known as virtual drives. For example, if you want to have a logical drive P: mapped to a local folder on your computer, say c:\temp, you can simply use the following command to make it.

   subst p: c:\temp

It’s very useful when you test out the application that uses a network mapped drive so you can have a complete test environment right on your local machine.

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If you want to make them like a permanent driver that doesn’t disappear, you can either

Create a new registry entry “string value” in the following key:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\DOS Devices

The name of the entry should be “X:” where X is the drive letter you want to make.

And the value of the entry should be the local path in the form of: \??\c:\path

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