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--- modop:minipi [2020/11/25 16:12] – root
+++ modop:minipi [2020/11/25 17:38] (current) – root
@@ Line 11: / Line 11: @@
 apt-get install -y busybox-syslogd && apt-get purge -y rsyslog
-# Disable wifi and bluetooth
+# Disable audio, wifi and bluetooth
 echo "dtoverlay=pi3-disable-wifi" >> /boot/config.txt
 echo "dtoverlay=pi3-disable-bt" >> /boot/config.txt
+sed -i 's/dtparam=audio=on/#dtparam=audio=on/' /boot/config.txt
 # Purge unnecessary packages
-apt-get purge -y avahi-daemon bind9-host bluez bluez-firmware dphys-swapfile geoip-database libavahi-common-data libavahi-common3 libavahi-core7 libbind9-161 libdaemon0 libdns1104 libfstrm0 libgeoip1 libisc1100 libisccc161 libisccfg163 liblmdb0 liblwres161 libnss-mdns libprotobuf-c1 pi-bluetooth triggerhappy
+apt-get purge -y avahi-daemon bind9-host bluez bluez-firmware dphys-swapfile geoip-database libavahi-common-data libavahi-common3 libavahi-core7 libbind9-161 libdaemon0 libdns1104 libfstrm0 libgeoip1 libisc1100 libisccc161 libisccfg163 liblmdb0 liblwres161 libnss-mdns libprotobuf-c1 pi-bluetooth triggerhappy wpasupplicant
 # Delete the swap file
 rm -f /var/swap
+# Switch to fastboot
+sed -i 's/rootwait/rootwait fastboot noswap/' /boot/cmdline.txt
+sed -i 's/console=serial0,115200 //' /boot/cmdline.txt
 # Disable HDMI on startup
 echo "/usr/bin/tvservice -o" >> /etc/rc.local
+# Disable unneccesary services
+systemctl disable keyboard-setup.service
+systemctl disable rpi-eeprom-update.service
+</code>
+===== Read only =====
+<code bash>
+# Move some system files
+cp /etc/resolv.conf /tmp/dhcpcd.resolv.conf
+rm -rf /var/lib/dhcp /var/lib/dhcpcd5 /var/run /var/spool /var/lock /etc/resolv.conf
+ln -s /tmp /var/lib/dhcp
+ln -s /tmp /var/lib/dhcpcd5
+ln -s /tmp /var/run
+ln -s /tmp /var/spool
+ln -s /tmp /var/lock
+ln -s /tmp/dhcpcd.resolv.conf /etc/resolv.conf
+# Update dhcpcd5.service
+sed -i 's/PIDFile=\/run\/dhcp/PIDFile=\/var\/run\/dhcp/' /etc/systemd/system/dhcpcd5.service
+# Update the random-seed unit file
+mv /var/lib/systemd/random-seed /tmp/random-seed
+ln -s /tmp/random-seed /var/lib/systemd/random-seed
+sed -i '/^\[Service\]$/a ExecStartPre=/bin/echo "" >/tmp/random-seed' /lib/systemd/system/systemd-random-seed.service
+# Update fstab
+grep '\/tmp' /etc/fstab &> /dev/null || echo "tmpfs           /tmp            tmpfs   nosuid,nodev         0       0" >> /etc/fstab
+grep '\/var' /etc/fstab &> /dev/null || echo "tmpfs           /var/log        tmpfs   nosuid,nodev         0       0" >> /etc/fstab
+grep '\/var\/tmp' /etc/fstab &> /dev/null || echo "tmpfs           /var/tmp        tmpfs   nosuid,nodev         0       0" >> /etc/fstab
+# Reload systemd units
+systemctl daemon-reload
 </code>