How can I enable friendly trees in Windows Explorer?

A. Friendly trees enable automatic folder expansion when you select a disk, and any other expanded disks will collapse giving a cleaner view:

  1. Start the registry editor (regedit.exe).
  2. Navigate to the HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced registry subkey.
  3. Double click the "FriendlyTree" value (or create the DWORD type value if it doesn't exist).
  4. Set the value to 1 to enable the feature or 0 to disable it.
  5. Click OK and close the registry editor.
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