1 files changed, 45 insertions, 0 deletions
diff --git a/create_stage4_cdrom.sh b/create_stage4_cdrom.sh
new file mode 100755
index 0000000..e773c1e
--- /dev/null
+++ b/create_stage4_cdrom.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+
+# shellcheck source=./default.conf
+. "./default.conf"
+
+# builds a small ISO image for installing a stage 4 system:
+# it uses PXE to boot from a TFTP server (kernel and ramdisk),
+# then loads the ISO as NBD block device. This is for installation
+# on old machines with only very limited amount of RAM (currently
+# requires 64 MB minimal)
+
+sudo rm -rf $STAGE4_ISOLINUX
+
+# copy chroot to ISOlinux dir
+mkdir $STAGE4_ISOLINUX
+sudo cp -a $STAGE4_CHROOT/{bin,boot,dev,etc,home,lib,mnt,opt,proc,root,run,sbin,srv,sys,tmp,usr,var} $STAGE4_ISOLINUX/.
+sudo chown -R cross:cross $STAGE4_ISOLINUX/.
+cd $STAGE4_ISOLINUX || exit 1
+
+# on the TFTP server (e. g. as pxelinux.cfg/default)
+mkdir boot/isolinux
+cat >boot/isolinux/isolinux.cfg <<EOF
+default menu.c32
+prompt 0
+timeout 20
+ontimeout linux
+
+label linux
+initrd initramfs-linux.img
+linux vmlinuz-linux
+append rw ip=:::::eth0:dhcp nbd_host=192.168.1.12 nomodeset init=/lib/systemd/systemd nbd_name=archiso root=/dev/nbd0 console=tty0
+EOF
+sudo chown cross:cross boot/isolinux/isolinux.cfg
+
+sudo chown -R root:root .
+sudo chmod 0775 etc/init/boot
+sudo cp /usr/lib/syslinux/bios/ldlinux.c32 boot/isolinux/.
+sudo cp /usr/lib/syslinux/bios/menu.c32 boot/isolinux/.
+sudo cp /usr/lib/syslinux/bios/libutil.c32 boot/isolinux/.
+sudo cp /usr/lib/syslinux/bios/isolinux.bin boot/isolinux/.
+sudo genisoimage -J -r -o ../arch486-stage4.iso -b boot/isolinux/isolinux.bin \
+	-c boot/isolinux/boot.cat -input-charset UTF-8 -no-emul-boot \
+	-boot-load-size 4 -boot-info-table -joliet-long .
+cd .. || exit 1
+