diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..256078d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "deark"]
+	path = deark
+	url = https://github.com/jsummers/deark.git
diff --git a/Dockerfile b/Dockerfile
index 00919d5..cf0dc66 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -37,6 +37,10 @@ COPY . /biostools
 RUN cd /biostools/bios_extract && \
 	make
 
+# Compile deark.
+RUN cd /biostools/deark && 
+	make
+
 # Create final image.
 FROM debian:bullseye
 
@@ -57,5 +61,5 @@ RUN pip install -r /biostools/requirements.txt
 VOLUME /bios
 WORKDIR /biostools
 
-# Run our entry point script.
+# Run our entrypoint script.
 ENTRYPOINT ["/bin/sh", "/biostools/docker-entrypoint.sh"]
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..083217d
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+.PHONY: all
+
+all:
+	make -C bios_extract all
+	make -C deark all
+
+%:
+	make -C bios_extract "$@"
+	make -C deark "$@"
diff --git a/README.md b/README.md
index 28fa958..114d3fe 100644
--- a/README.md
+++ b/README.md
@@ -34,12 +34,11 @@ A toolkit for extracting and analyzing x86 BIOS ROM images (mostly) within the c
 ### Installation
 
 1. Clone this repository.
-2. Build the `bios_extract` tool:
+2. Build the `bios_extract` and `deark` tools:
 
 ```
-cd bios_extract
+cd /path/to/bios-tools
 make
-cd ..
 ```
 
 3. Download the `UEFIExtract` tool from its [GitHub repository](https://github.com/LongSoft/UEFITool/releases) and place its executable on the repository's root directory. Prebuilt versions are only available for `x86_64`, but this tool is optional, and only required for UEFI extraction.
diff --git a/bios_extract/README.md b/bios_extract/README.md
index 7c23ade..d6ddd96 100644
--- a/bios_extract/README.md
+++ b/bios_extract/README.md
@@ -5,6 +5,7 @@ Fork of the [coreboot bios_extract tool](https://github.com/coreboot/bios_extrac
 ## Modifications
 
 * Added some sanity checks
+* Added automatic saving of parts of the image that were not processed, like PHOEDECO
 * Improved AMI, Award and Phoenix BIOS detection
 * Improved AMIBIOS extraction
 * Improved Award extraction on semi-compressed v4.50 BIOSes
diff --git a/deark b/deark
new file mode 160000
index 0000000..267c41a
--- /dev/null
+++ b/deark
@@ -0,0 +1 @@
+Subproject commit 267c41acec828b851891c4f7cd6c9959df1df918
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index 212a540..c1a8e45 100644
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -7,7 +7,7 @@
 #
 #                This file is part of the 86Box BIOS Tools distribution.
 #
-#                Docker container entry point for running the tools.
+#                Docker container entrypoint for running the tools.
 #
 #
 #