diff --git a/imperialspeculate/README.md b/imperialspeculate/README.md
index c3ccc45..0de4829 100644
--- a/imperialspeculate/README.md
+++ b/imperialspeculate/README.md
@@ -20,3 +20,34 @@ One-liner:
 ```
 mkdir ~/vm-imperialspeculate || cd ~/vm-imperialspeculate && curl -q https://raw.githubusercontent.com/stationgroup/vagrant-labs/master/imperialspeculate/Vagrantfile -O && vagrant up
 ```
+
+## Notes
+
+### Errors on first boot of _freebsd5_ and _freebsd6_.
+
+These vagrant boxes will error on first boot.
+
+```
+==> freebsd6: Mounting shared folders...
+    freebsd6: /vagrant => /home/USER/vm-imperialspeculate
+Vagrant is not able to mount VirtualBox shared folders on BSD-based
+guests. BSD-based guests do not support the VirtualBox filesystem at
+this time.
+
+To change the type of the default synced folder, specify the type as
+rsync or nfs:
+
+    config.vm.synced_folder ".", "/vagrant", type: "nfs" # or "rsync"
+
+Alternatively, if you do not need to mount the default synced folder,
+you can also disable it entirely:
+
+    config.vm.synced_folder ".", "/vagrant", disabled: true
+
+You can read more about Vagrant's synced folder types and the various
+configuration options on the Vagrant website.
+
+This is not a bug in Vagrant.
+```
+
+Just run `vagrant up` again. You can still run `vagrant ssh freebsd5` to access the box.