diff --git a/virtual/vmbox.txt b/virtual/vmbox.txt
new file mode 100644
index 0000000..b1b8e07
--- /dev/null
+++ b/virtual/vmbox.txt
@@ -0,0 +1,5 @@
+1.VirtualBox Set Shared Folder And Set Authority
+(1) mount position: /mnt/shared
+(2) fixed allocation
+(3) sudo usermod -aG vboxsf $(whoami)
+(4) sudo reboot now