Why can't I select a network drive for disk testing?

It is possible to test mapped network drives using either the standard disk test (by selecting the drive from preferences) or from the advanced disk test.

However, on Windows Vista and later there is an issue relating to the User Access Control (UAC) and mapped network drives. Mapped network drives are not visible when running  as elevated administrator, which PerformanceTest is.

There is a workaround available that makes network drives available with elevated admin, and by extension available for testing in PT.

1. Click Start, type regedit in the Start Search box, and then press ENTER.
2. Locate and then right-click the following registry subkey:
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
3. Point to New, and then click DWORD Value.
4. Type EnableLinkedConnections, and then press ENTER.
5. Right-click EnableLinkedConnections, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7. Exit Registry Editor, and then restart the computer.

A more complete description of this issue and the workaround as explained by Microsoft can be found here http://support.microsoft.com/kb/937624