Search notes:

Registry: HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE

inst_loc

The value of inst_loc points to the directory that stores the Oracle Universal Installer files.
This directory has a subdirectory named ContentsXML which stores the inventory.xml file.
The default value is C:\Program Files\Oracle\Inventory.
BTW, on Linux, the default location is /opt/oracle/oraInventory.

See also

The sub keys
The VirtualBox related subkeys VirtualBox Guest Additions and VirtualBox Guest Additions.

Index