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arch-installer/install.sh
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#!/bin/sh
# Function to get drive name
DISK=""
get_drive() {
lsblk
printf "\nEnter the drive name (e.g., sda, sdb, vda): "
read DISK
if [ -z "${DISK}" ]; then
echo "No drive name entered. Exiting."
exit 1
fi
DISK="/dev/${DISK}"
printf "WARNING: All data on %s will be erased. Are you sure? [Y/n] " "${DISK}"
read confirmation
case "$confirmation" in
"n" | "N")
echo "Operation canceled."
exit 0
;;
"" | "y" | "Y")
echo "Proceeding with the operation on ${DISK}."
printf "Wiping drive in "
for i in 3 2 1; do
printf '%d...' $i
sleep 1
done
echo ""
;;
*)
echo "Invalid input. Defaulting to 'No'."
exit 0
;;
esac
echo "Drive ${DISK} confirmed for installation."
}
setup_partitions() {
if [ ! -d "/sys/firmware/efi" ]; then # Checking for bios system
echo "BIOS systems are not supported."
fi
umount -A -R /mnt # make sure everything is unmounted before we start
sgdisk -Z ${DISK} # zap all on disk
sgdisk -a 2048 -o ${DISK} # new gpt disk 2048 alignment
# Create partitions
sgdisk -n 1::+1G --typecode=1:ef00 --change-name=1:"BOOT" ${DISK} # partition 1 (UEFI boot partition)
sgdisk -n 2::+4G --typecode=2:8200 --change-name=1:"SWAP" ${DISK} # partition 2 (Swap partition)
sgdisk -n 3::-0 --typecode=3:8300 --change-name=1:"ROOT" ${DISK} # partition 3 (Root), default start, remaining
partprobe ${DISK} # reread partition table to ensure it is correct
# Create filesystems
mkfs.fat -F32 -n "BOOT" ${DISK}1
mkswap -f ${DISK}2
mkfs.ext4 -F -L "ROOT" ${DISK}3
# Mount
mount ${DISK}3 /mnt
if [ $? -ne 0 ]; then
echo "Failed to mount the ROOT partition."
exit 2 # Exit if mounting ROOT partition fails
fi
mount --mkdir ${DISK}1 /mnt/boot
if [ $? -ne 0 ]; then
echo "Failed to mount the BOOT partition."
exit 2 # Exit if mounting BOOT partition fails
fi
swapon ${DISK}2
}
# Setup systemdboot as the bootloader
setup_bootloader() {
# Run bootctl inside chroot
arch-chroot /mnt bootctl install
if [ $? -ne 0 ]; then
echo "Error: Failed to install systemd-boot."
exit 3
fi
BOOTLOADER_ENTRY="/mnt/boot/loader/entries/arch.conf"
ARCH_ENTRY_TEMPLATE="/mnt/usr/share/systemd/bootctl/arch.conf"
# Get PARTUUID for the root partition
PARTUUID=$(blkid | grep "${DISK}3" | awk -F= '{print $NF}' | tr -d '\"')
if [ -z "$PARTUUID" ]; then
echo "Error: Unable to find PARTUUID for ${DISK}3."
exit 3
fi
# Create a new entry based on the template and PARTUUID
echo "Creating bootloader entry with PARTUUID=$PARTUUID"
sed "s/^options.*/options root=PARTUUID=$PARTUUID rw splash/" "$ARCH_ENTRY_TEMPLATE" >"$BOOTLOADER_ENTRY"
if [ $? -eq 0 ]; then
echo "Successfully created bootloader entry: $BOOTLOADER_ENTRY"
else
echo "Error: Failed to create the bootloader entry."
exit 3
fi
}
# Main execution flow
# Ask for the drive to install on
get_drive
# Partition, create filesystems and mount
setup_partitions
# Then install the kernel and some required packages
pacstrap -K /mnt base linux linux-firmware networkmanager
genfstab -U /mnt >>/mnt/etc/fstab
# Setup base locales
ln -sf /usr/share/zoneinfo/Europe/Paris /mnt/etc/localtime
arch-chroot /mnt locale-gen
echo LANG=en_US.UTF-8 >/mnt/etc/locale.conf
echo hostname >/mnt/etc/hostname
arch-chroot /mnt bash -c "echo 'root:password' | chpasswd"
# NetworkManager handles all the network setup
arch-chroot /mnt systemctl enable NetworkManager
setup_bootloader
umount -A -R /mnt # Unmount everything for safety
printf "\n\n\n==> Installation finished, you can now reboot.\n"