diff --git a/Install-Windows.md b/Install-Windows.md
index 9f606ee..fc9fe51 100644
--- a/Install-Windows.md
+++ b/Install-Windows.md
@@ -40,4 +40,11 @@ display drivers may fix later. Earlier OS shows correctly.
 Try adding some Windows Registry keys:
 https://blogs.oracle.com/virtualization/post/install-microsoft-windows-11-on-virtualbox
 
-2.5. Boot from USB Instal Windows stick, usually after power on F8 key is boot menu, or F12
\ No newline at end of file
+2.5. Boot from USB Instal Windows stick, usually after power on F8 key is boot menu, or F12
+
+2.6. If using same license key at dual boot:
+
+- Win11
+- Ubuntu host, VirtualBox Win11 Guest
+
+If some activation phone call asks in how many computers you use license at, answer 1.
\ No newline at end of file