diff --git a/InstallationGuide.md b/InstallationGuide.md
index c8996a1a..59eeb3fa 100644
--- a/InstallationGuide.md
+++ b/InstallationGuide.md
@@ -82,6 +82,12 @@ Known Issues
 
 -   Some keyboard layout set by KDE System Settings can cause [​keyboard not working at all](https://groups.google.com/group/qubes-devel/browse_thread/thread/77d076b65dda7226). If you hit this issue, you can switch to console (by console login option) and manually edit ``/etc/X11/xorg.conf.d/00-system-setup-keyboard.conf`` (and ``/etc/sysconfig/keyboard``) and place correct keyboard layout settings (details in linked thread). You can check if specific keyboard layout settings are proper using ``setxkbmap`` tool.
 
+-   On systems with more than 8GB of RAM there is problem with Disposable VM. To fix it, limit maximum memory allocation for DispVM to 3GB
+
+    ``` {.wiki}
+    qvm-prefs -s fedora-17-x64-dvm maxmem 3072
+    ```
+
 Getting Help
 ------------