diff --git a/docs/images/operating-system-concepts-2-10.png b/docs/images/operating-system-concepts-2-10.png
new file mode 100644
index 0000000..81df537
Binary files /dev/null and b/docs/images/operating-system-concepts-2-10.png differ
diff --git a/docs/images/operating-system-concepts-2-11.png b/docs/images/operating-system-concepts-2-11.png
new file mode 100644
index 0000000..0903d9f
Binary files /dev/null and b/docs/images/operating-system-concepts-2-11.png differ
diff --git a/docs/images/operating-system-concepts-2-12.png b/docs/images/operating-system-concepts-2-12.png
new file mode 100644
index 0000000..5af3c08
Binary files /dev/null and b/docs/images/operating-system-concepts-2-12.png differ
diff --git a/docs/images/operating-system-concepts-2-13.png b/docs/images/operating-system-concepts-2-13.png
new file mode 100644
index 0000000..feadd40
Binary files /dev/null and b/docs/images/operating-system-concepts-2-13.png differ
diff --git a/docs/images/operating-system-concepts-2-14.png b/docs/images/operating-system-concepts-2-14.png
new file mode 100644
index 0000000..97d7794
Binary files /dev/null and b/docs/images/operating-system-concepts-2-14.png differ
diff --git a/docs/images/operating-system-concepts-2-15.png b/docs/images/operating-system-concepts-2-15.png
new file mode 100644
index 0000000..d2bb0ef
Binary files /dev/null and b/docs/images/operating-system-concepts-2-15.png differ
diff --git a/docs/images/operating-system-concepts-2-5.png b/docs/images/operating-system-concepts-2-5.png
new file mode 100644
index 0000000..b3213b4
Binary files /dev/null and b/docs/images/operating-system-concepts-2-5.png differ
diff --git a/docs/images/operating-system-concepts-2-6.png b/docs/images/operating-system-concepts-2-6.png
new file mode 100644
index 0000000..3c87601
Binary files /dev/null and b/docs/images/operating-system-concepts-2-6.png differ
diff --git a/docs/images/operating-system-concepts-2-9.png b/docs/images/operating-system-concepts-2-9.png
new file mode 100644
index 0000000..d2f254b
Binary files /dev/null and b/docs/images/operating-system-concepts-2-9.png differ
diff --git a/docs/notes/operating-system-concepts.org.gpg b/docs/notes/operating-system-concepts.org.gpg
index 6b66f5e..4303d21 100644
Binary files a/docs/notes/operating-system-concepts.org.gpg and b/docs/notes/operating-system-concepts.org.gpg differ