diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..74afd25
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.inf eol=crlf
diff --git a/Dockerfile.m4 b/Dockerfile.m4
index ca5d300..7532f41 100644
--- a/Dockerfile.m4
+++ b/Dockerfile.m4
@@ -12,7 +12,10 @@ RUN export DEBIAN_FRONTEND=noninteractive \
 	&& apt-get install -y --no-install-recommends \
 		ca-certificates \
 		curl \
-		unzip \
+		genisoimage \
+		p7zip-full \
+		qemu-system-x86 \
+		qemu-utils \
 	&& rm -rf /var/lib/apt/lists/*
 
 # Download noVNC
@@ -36,7 +39,18 @@ ARG REACTOS_ISO_URL=https://downloads.sourceforge.net/project/reactos/ReactOS/0.
 ARG REACTOS_ISO_CHECKSUM=ec2776422ed45f8ee7488030eadd7ea40b4276cee04c5e5e5a3f1a5a68c978a7
 RUN curl -Lo /tmp/reactos.zip "${REACTOS_ISO_URL:?}"
 RUN printf '%s' "${REACTOS_ISO_CHECKSUM:?}  /tmp/reactos.zip" | sha256sum -c
-RUN unzip -p /tmp/reactos.zip 'ReactOS-*.iso' > /tmp/reactos.iso
+RUN 7z e /tmp/reactos.zip -so '*.iso' > /tmp/reactos.iso \
+	&& 7z x /tmp/reactos.iso -o/tmp/reactos/ \
+	&& rm -f /tmp/reactos.iso
+COPY --chown=root:root ./data/iso/ /tmp/reactos/
+RUN mkisofs -no-emul-boot -iso-level 4 -eltorito-boot loader/isoboot.bin -o /tmp/reactos.iso /tmp/reactos/ \
+	&& qemu-img create -f qcow2 /tmp/reactos.qcow2 124G \
+	&& timeout 900 qemu-system-x86_64 \
+		-accel tcg -smp 2 -m 512 -serial stdio -display none \
+		-drive file=/tmp/reactos.qcow2,index=0,media=disk,format=qcow2 \
+		-drive file=/tmp/reactos.iso,index=2,media=cdrom,format=raw \
+		-boot order=cd,menu=off \
+		-netdev user,id=n0 -device e1000,netdev=n0
 
 ##################################################
 ## "main" stage
@@ -63,24 +77,19 @@ RUN export DEBIAN_FRONTEND=noninteractive \
 # Environment
 ENV VM_CPU=2
 ENV VM_RAM=1024M
-ENV VM_DISK_SIZE=16G
 ENV VM_KEYBOARD=en-us
 ENV VM_NET_OPTIONS=hostfwd=tcp::13389-:3389,hostfwd=tcp::15900-:5900
-ENV VM_BOOT_ORDER=cd
 ENV VM_KVM=true
 ENV SVDIR=/etc/service/
 
-# Create some directories for QEMU
-RUN mkdir -p /var/lib/qemu/iso/ /var/lib/qemu/images/
-
 # Copy noVNC
 COPY --from=build --chown=root:root /tmp/novnc/ /opt/novnc/
 
 # Copy Websockify
 COPY --from=build --chown=root:root /tmp/websockify/ /opt/novnc/utils/websockify/
 
-# Copy ReactOS ISO
-COPY --from=build --chown=root:root /tmp/reactos.iso /var/lib/qemu/iso/reactos.iso
+# Copy ReactOS disk
+COPY --from=build --chown=root:root /tmp/reactos.qcow2 /var/lib/qemu/reactos.qcow2
 
 # Copy services
 COPY --chown=root:root ./scripts/service/ /etc/service/
diff --git a/README.md b/README.md
index 38ebec9..bb0ed6f 100644
--- a/README.md
+++ b/README.md
@@ -23,15 +23,9 @@ Number of cores the VM is permitted to use (`2` by default).
 #### `VM_RAM`
 Amount of memory the VM is permitted to use (`1024M` by default).
 
-#### `VM_DISK_SIZE`
-VM disk size (`16G` by default).
-
 #### `VM_KEYBOARD`
 VM keyboard layout (`en-us` by default).
 
-#### `VM_BOOT_ORDER`
-VM boot order (`cd` by default).
-
 #### `VM_KVM`
 Start QEMU in KVM mode (`true` by default).
 > The `--device /dev/kvm` option is required for this variable to take effect.
diff --git a/data/iso/reactos/unattend.inf b/data/iso/reactos/unattend.inf
new file mode 100644
index 0000000..cf6ef5d
--- /dev/null
+++ b/data/iso/reactos/unattend.inf
@@ -0,0 +1,46 @@
+[Unattend]
+Signature = "$ReactOS$"
+
+UnattendSetupEnabled = yes
+
+DestinationDiskNumber = 0
+DestinationPartitionNumber = 1
+InstallationDirectory = ReactOS
+AutoPartition = 1
+FormatPartition = 1
+; 0: FAT
+; 1: BtrFS
+FsType = 0
+; 0: Skips MBR installation
+; 1: Install MBR on floppy
+; 2: Install MBR on hdd
+MBRInstallType = 2
+
+FullName = "Owner"
+OrgName = "Org"
+ComputerName = "REACTOS"
+; AdminPassword = "password"
+
+; TimeZoneIndex lists:
+; https://docs.microsoft.com/en-us/previous-versions/windows/embedded/ms912053(v=winembedded.10)
+TimeZoneIndex = 85
+DisableAutoDaylightTimeSet = 1
+
+; LocaleID lists:
+; https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-lcid/a9eac961-e77d-41a6-90a5-ce1a8b0cdb9c
+LocaleID = 409
+
+; 0: ReactOS Server
+; 1: ReactOS Workstation
+ProductOption = 0
+
+DisableGeckoInst = no
+
+[GuiRunOnce]
+%SystemRoot%\system32\shutdown.exe /s /t 5
+
+[Display]
+BitsPerPel = 32
+XResolution = 1440
+YResolution = 900
+VRefresh = 0
diff --git a/scripts/bin/container-init b/scripts/bin/container-init
index d1ef86f..cc67cc2 100755
--- a/scripts/bin/container-init
+++ b/scripts/bin/container-init
@@ -2,11 +2,6 @@
 
 set -eu
 
-# Create ReactOS disk
-if [ ! -f /var/lib/qemu/images/reactos.img ]; then
-	qemu-img create -f qcow2 /var/lib/qemu/images/reactos.img "${VM_DISK_SIZE:?}"
-fi
-
 stop() {
 	for s in "${SVDIR:?}"/*; do sv force-stop "${s:?}" >/dev/null 2>&1; done
 	kill -HUP "${RUNSVDIRPID:?}"; wait "${RUNSVDIRPID:?}"
diff --git a/scripts/service/qemu/run b/scripts/service/qemu/run
index d1cb0a0..71dcdcd 100755
--- a/scripts/service/qemu/run
+++ b/scripts/service/qemu/run
@@ -5,10 +5,8 @@ set -eu
 set --
 set -- "$@" -smp "${VM_CPU:?}" -m "${VM_RAM:?}"
 set -- "$@" -serial stdio -monitor unix:/run/qemu-monitor,server,nowait -device VGA -display vnc=:0
-set -- "$@" -drive file=/var/lib/qemu/images/reactos.img,index=0,media=disk,format=qcow2
-set -- "$@" -drive file=/var/lib/qemu/iso/reactos.iso,index=2,media=cdrom,format=raw
-set -- "$@" -boot order="${VM_BOOT_ORDER:?}",menu=off
-set -- "$@" -netdev user,id=n0,"${VM_NET_OPTIONS:?}"
+set -- "$@" -drive file=/var/lib/qemu/reactos.qcow2,index=0,media=disk,format=qcow2
+set -- "$@" -netdev user,id=n0,"${VM_NET_OPTIONS?}"
 set -- "$@" -device e1000,netdev=n0
 set -- "$@" -usb -device usb-tablet
 set -- "$@" -k "${VM_KEYBOARD:?}"