diff --git a/playbooks/install.yaml b/playbooks/install.yaml
index 691f213da..a3bcd3b6e 100644
--- a/playbooks/install.yaml
+++ b/playbooks/install.yaml
@@ -37,9 +37,7 @@
         enable-serial-console
         {{ dib_init_element|default('simple-init') }}
         {{ extra_dib_elements|default('') }}
-      when:
-        - create_image_via_dib | bool
-        - not transform_boot_image | bool
+      when: create_image_via_dib | bool
   environment:
     http_proxy: "{{ lookup('env','http_proxy') }}"
     https_proxy: "{{ lookup('env','https_proxy') }}"
diff --git a/playbooks/inventory/group_vars/localhost b/playbooks/inventory/group_vars/localhost
index 6cfa2c9a3..546432503 100644
--- a/playbooks/inventory/group_vars/localhost
+++ b/playbooks/inventory/group_vars/localhost
@@ -54,11 +54,6 @@ mysql_password:
 create_image_via_dib: true
 dib_image_type: vm
 
-# Transform boot image is intended for use with the Ubuntu trusty image.
-# It makes the image bootable by installing Grub.
-# Setting to prepend a partition image with a boot sector and partition table.
-transform_boot_image: false
-
 # Create IPA image instead of downloading an pre-made IPA image.
 create_ipa_image: false
 
diff --git a/playbooks/inventory/group_vars/target b/playbooks/inventory/group_vars/target
index 6cfa2c9a3..546432503 100644
--- a/playbooks/inventory/group_vars/target
+++ b/playbooks/inventory/group_vars/target
@@ -54,11 +54,6 @@ mysql_password:
 create_image_via_dib: true
 dib_image_type: vm
 
-# Transform boot image is intended for use with the Ubuntu trusty image.
-# It makes the image bootable by installing Grub.
-# Setting to prepend a partition image with a boot sector and partition table.
-transform_boot_image: false
-
 # Create IPA image instead of downloading an pre-made IPA image.
 create_ipa_image: false
 
diff --git a/playbooks/roles/bifrost-ironic-install/defaults/main.yml b/playbooks/roles/bifrost-ironic-install/defaults/main.yml
index 091541d54..529f58f06 100644
--- a/playbooks/roles/bifrost-ironic-install/defaults/main.yml
+++ b/playbooks/roles/bifrost-ironic-install/defaults/main.yml
@@ -24,8 +24,6 @@ create_image_via_dib: true
 dib_image_type: vm
 # Setting to install diskimage-builder
 install_dib: "{{ create_image_via_dib }}"
-# Setting to prepend a partition image with a boot sector and partition table.
-transform_boot_image: false
 # If testing is true, then the environment is setup for using libvirt
 # virtual machines for the hardware instead of real hardware.
 testing: false
diff --git a/playbooks/test-bifrost.yaml b/playbooks/test-bifrost.yaml
index c8bb2d358..8b03ed890 100644
--- a/playbooks/test-bifrost.yaml
+++ b/playbooks/test-bifrost.yaml
@@ -66,7 +66,7 @@
       dib_os_element: "debian"
       dib_os_release: "buster"
       dib_elements: "vm enable-serial-console simple-init {{ extra_dib_elements|default('') }}"
-      when: create_image_via_dib | bool and not transform_boot_image | bool
+      when: create_image_via_dib | bool
     - role: bifrost-keystone-client-config
       user: "{{ ansible_env.SUDO_USER | default(ansible_user_id) }}"
       clouds:
diff --git a/releasenotes/notes/transform_boot_image-16fe26bd1a849aa0.yaml b/releasenotes/notes/transform_boot_image-16fe26bd1a849aa0.yaml
new file mode 100644
index 000000000..cca65151b
--- /dev/null
+++ b/releasenotes/notes/transform_boot_image-16fe26bd1a849aa0.yaml
@@ -0,0 +1,3 @@
+other:
+  - |
+    Removes the no longer used ``transform_boot_image`` variable.