diff --git a/docs.it4i/anselm-cluster-documentation/introduction.md b/docs.it4i/anselm-cluster-documentation/introduction.md
index 82c244bbebcc51253627eda55eb45109bef3b2ab..a8769cb225d9541a2c8f3f5a78414a9676d9787c 100644
--- a/docs.it4i/anselm-cluster-documentation/introduction.md
+++ b/docs.it4i/anselm-cluster-documentation/introduction.md
@@ -3,7 +3,7 @@ Introduction
 
 Welcome to Anselm supercomputer cluster. The Anselm cluster consists of 209 compute nodes, totaling 3344 compute cores with 15TB RAM and giving over 94 Tflop/s theoretical peak performance. Each node is a powerful x86-64 computer, equipped with 16 cores, at least 64GB RAM, and 500GB harddrive. Nodes are interconnected by fully non-blocking fat-tree Infiniband network and equipped with Intel Sandy Bridge processors. A few nodes are also equipped with NVIDIA Kepler GPU or Intel Xeon Phi MIC accelerators. Read more in [Hardware Overview](hardware-overview/).
 
-The cluster runs bullx Linux [](http://www.bull.com/bullx-logiciels/systeme-exploitation.html)[operating system](operating-system/), which is compatible with the  RedHat [ Linux family.](http://upload.wikimedia.org/wikipedia/commons/1/1b/Linux_Distribution_Timeline.svg) We have installed a wide range of software packages targeted at different scientific domains. These packages are accessible via the [modules environment](environment-and-modules/).
+The cluster runs bullx Linux [](http://www.bull.com/bullx-logiciels/systeme-exploitation.html)[operating system](software/operating-system/), which is compatible with the  RedHat [ Linux family.](http://upload.wikimedia.org/wikipedia/commons/1/1b/Linux_Distribution_Timeline.svg) We have installed a wide range of software packages targeted at different scientific domains. These packages are accessible via the [modules environment](environment-and-modules/).
 
 User data shared file-system (HOME, 320TB) and job data shared file-system (SCRATCH, 146TB) are available to users.
 
diff --git a/docs.it4i/anselm-cluster-documentation/operating-system.md b/docs.it4i/anselm-cluster-documentation/software/operating-system.md
similarity index 100%
rename from docs.it4i/anselm-cluster-documentation/operating-system.md
rename to docs.it4i/anselm-cluster-documentation/software/operating-system.md