set -eu
-ISO_MNT="/mnt/iso"
PARTITION_LABEL="multiboot"
MULTIBOOT_MNT="/mnt/multiboot"
-GRUB_CFG="${MULTIBOOT_MNT}/grub/grub.cfg"
-SYSLINUX_VERSION="6.03"
-SYSLINUX_URL="https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-${SYSLINUX_VERSION}.tar.gz"
function cmd_format {
- if [ -z "${1:-}" ]; then
+ if [ ! -b "${1:-}" ]; then
echo "Usage: $0 format /dev/sdX"
exit 1
fi
sudo mkfs.vfat -n "$PARTITION_LABEL" "$PARTITION_DEVICE"
}
-function cmd_bootloader {
- DISK_DEVICE="$(mount|grep /mnt/multiboot|cut -d' ' -f1|sed 's/[0-9]*$//')"
+function cmd_grub {
+ DISK_DEVICE="$(findmnt -n -o source "$MULTIBOOT_MNT" | sed 's/[0-9]*$//')"
+ if [ ! -b "$DISK_DEVICE" ]; then
+ echo "ERROR! Could not find disk to install bootloader. Try using mount."
+ exit 1
+ fi
set -x
sudo -k
install_grub_cfg
}
+function cmd_grubcfg {
+ set -x
+ install_grub_cfg
+}
+
function install_grub_bios {
sudo grub-install \
--target=i386-pc \
}
function install_grub_efi {
- sudo grub-install \
- --target=x86_64-efi \
- --no-nvram \
- --removable \
- --efi-directory="$MULTIBOOT_MNT" \
- --boot-directory="$MULTIBOOT_MNT" \
- "$DISK_DEVICE"
+ for arch in i386-efi x86_64-efi; do
+ sudo grub-install \
+ --target="$arch" \
+ --no-nvram \
+ --removable \
+ --efi-directory="$MULTIBOOT_MNT" \
+ --boot-directory="$MULTIBOOT_MNT" \
+ "$DISK_DEVICE"
+ done
}
function install_grub_cfg {
- mkdir -p "$(dirname "$GRUB_CFG")"
- cat <<EOT >> "$GRUB_CFG"
-insmod all_video
-insmod part_msdos
-insmod progress
-search --set=root --label $PARTITION_LABEL
-
-EOT
+ print_grub_cfg | sudo tee "${MULTIBOOT_MNT}/grub/grub.cfg" > /dev/null
}
function cmd_mount {
set -x
- PARTITION_DEVICE="$(readlink -f /dev/disk/by-label/multiboot)"
+ PARTITION_DEVICE="$(readlink -f "/dev/disk/by-label/${PARTITION_LABEL}")"
sudo mkdir -p "$MULTIBOOT_MNT"
while sudo umount "$PARTITION_DEVICE" &> /dev/null; do true; done
sudo mount "$PARTITION_DEVICE" "$MULTIBOOT_MNT" -o "uid=$(whoami)"
sudo rmdir "$MULTIBOOT_MNT"
}
-function cmd_add_iso {
- if [ -z "${1:-}" ]; then
- echo "Usage: $0 add_iso /path/to/ubuntu.iso"
- exit 1
- fi
+function cmd_freedos {
set -x
- ISO_FILENAME="$1"
- ISO_BASENAME="$(basename "$ISO_FILENAME")"
- local f="$(basename "$ISO_FILENAME")"
-
- if [[ "$ISO_BASENAME" == ubuntu-*-desktop-*.iso ]]; then
- setup_ubuntu
- elif [[ "$ISO_BASENAME" == debian-live-*.iso ]]; then
- setup_debian
- elif [[ "$ISO_BASENAME" == Fedora-Workstation-Live-*.iso ]]; then
- setup_fedora
- elif [[ "$ISO_BASENAME" == archlinux-*.iso ]]; then
- setup_archlinux
- elif [[ "$ISO_BASENAME" == FD12*.zip ]]; then
- setup_freedos
- else
- echo "Unsupported ISO! $ISO_BASENAME"
- fi
-}
+ local SYSLINUX_VERSION="6.03"
+ local SYSLINUX_URL="https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-${SYSLINUX_VERSION}.tar.gz"
+ local FREEDOS_URL="http://www.freedos.org/download/download/FD12LITE.zip"
-function setup_ubuntu {
- copy_iso_data
+ curl -fL "$SYSLINUX_URL" | \
+ tar xz --no-same-owner --strip-components=3 -C "$MULTIBOOT_MNT" \
+ "syslinux-${SYSLINUX_VERSION}/bios/memdisk/memdisk"
- cat <<EOT >> "$GRUB_CFG"
-menuentry '$ISO_BASENAME' {
- loopback loop /$ISO_BASENAME
- linux (loop)/casper/vmlinuz.efi boot=casper quiet iso-scan/filename=/$ISO_BASENAME
- initrd (loop)/casper/initrd.lz
+ curl -fL "$FREEDOS_URL" > "${MULTIBOOT_MNT}/FD12LITE.zip"
}
-EOT
+function print_grub_cfg {
+ cat <<EOT
+insmod all_video
+insmod part_msdos
+insmod progress
+insmod regexp
+search --set=root --label $PARTITION_LABEL
+
+function setup_arch {
+ menuentry "\$1" {
+ loopback loop \$1
+ linux (loop)/arch/boot/x86_64/vmlinuz img_label=${PARTITION_LABEL} img_loop=\$1 archisobasedir=arch earlymodules=loop
+ initrd (loop)/arch/boot/x86_64/archiso.img
+ }
}
+for iso in /archlinux-*.iso; do
+ if [ -f "\$iso" ]; then
+ setup_arch \$iso
+ fi
+done
function setup_debian {
- copy_iso_data
-
- cat <<EOT >> "$GRUB_CFG"
-menuentry '$ISO_BASENAME' {
- loopback loop /$ISO_BASENAME
- linux (loop)/live/vmlinuz boot=live components findiso=/$ISO_BASENAME
- initrd (loop)/live/initrd.img
-}
+ menuentry "\$1" {
+ linux \$1/vmlinuz
+ initrd \$1/initrd.gz
+ }
+}
+for d in /debian-*-hd-media; do
+ if [ -d "\$d" ]; then
+ setup_debian \$d
+ fi
+done
-EOT
-}
+if [ -f /memdisk -a -f /FD12LITE.zip ]; then
+ menuentry /FD12LITE.zip {
+ if [ \${grub_platform} = pc ]; then
+ linux16 /memdisk raw
+ initrd16 /FD12LITE.zip
+ else
+ echo "FreeDOS only works with BIOS boot."
+ sleep 3
+ fi
+ }
+fi
function setup_fedora {
- copy_iso_data
-
- cat <<EOT >> "$GRUB_CFG"
-menuentry '$ISO_BASENAME' {
- loopback loop /$ISO_BASENAME
- linux (loop)/isolinux/vmlinuz root=live:CDLABEL=$(blkid -s LABEL -o value "$ISO_FILENAME") rd.live.image quiet iso-scan/filename=/$ISO_BASENAME
- initrd (loop)/isolinux/initrd.img
-}
-
-EOT
-}
-
-function setup_archlinux {
- copy_iso_data
-
- cat <<EOT >> "$GRUB_CFG"
-menuentry '$ISO_BASENAME' {
- loopback loop /$ISO_BASENAME
- linux (loop)/arch/boot/x86_64/vmlinuz img_label=${PARTITION_LABEL} img_loop=$ISO_BASENAME archisobasedir=arch earlymodules=loop
- initrd (loop)/arch/boot/x86_64/archiso.img
-}
-
-EOT
-}
+ menuentry "\$1" {
+ loopback loop \$1
+ probe -s iso_label -l (loop)
+ linux (loop)/isolinux/vmlinuz root=live:CDLABEL=\$iso_label rd.live.image quiet iso-scan/filename=\$1
+ initrd (loop)/isolinux/initrd.img
+ }
+}
+for iso in /Fedora-Workstation-Live-*.iso; do
+ if [ -f "\$iso" ]; then
+ setup_fedora \$iso
+ fi
+done
-function setup_freedos {
- install_memdisk
- copy_iso_data
-
- cat <<EOT >> "$GRUB_CFG"
-menuentry '$ISO_BASENAME' {
- if [ \${grub_platform} = pc ]; then
- linux16 /memdisk raw
- initrd16 /$ISO_BASENAME
- else
- echo "FreeDOS only works with BIOS boot."
- sleep 3
+function setup_ubuntu {
+ menuentry "\$1" {
+ loopback loop \$1
+ linux (loop)/casper/vmlinuz* boot=casper quiet iso-scan/filename=\$1
+ initrd (loop)/casper/initrd*
+ }
+}
+for iso in /ubuntu-*-desktop-*.iso; do
+ if [ -f "\$iso" ]; then
+ setup_ubuntu \$iso
fi
-}
+done
EOT
}
-function copy_iso_data {
- rsync --size-only --progress "$ISO_FILENAME" "${MULTIBOOT_MNT}/"
-}
-
-function install_memdisk {
- local dest="${MULTIBOOT_MNT}/memdisk"
-
- if [ -f "$dest" ]; then
- return
- fi
-
- for maybe in /usr/lib/syslinux/bios/memdisk /usr/lib/syslinux/memdisk; do
- if [ -f "$maybe" ]; then
- cp "$maybe" "$dest"
- return
- fi
- done
-
- curl --fail "$SYSLINUX_URL" | \
- tar xz --strip-components=3 -C "$MULTIBOOT_MNT" \
- "syslinux-${SYSLINUX_VERSION}/bios/memdisk/memdisk"
-}
-
CMD="cmd_${1:-}"
shift || true
if [ "$(type -t -- "$CMD")" = "function" ]; then
"${CMD}" "$@"
else
- echo "Usage: $0 [format|mount|bootloader|add_iso|umount]"
+ echo "Usage: $0 [format|mount|grub|grubcfg|freedos|umount]"
exit 1
fi