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Minimal instructions for installing arch linux on an UEFI system with full system encryption using dm-crypt and luks
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| # Install ARCH Linux with encrypted file-system and UEFI | |
| # The official installation guide (https://wiki.archlinux.org/index.php/Installation_Guide) contains a more verbose description. | |
| # Download the archiso image from https://www.archlinux.org/ | |
| # Copy to a usb-drive | |
| dd if=archlinux.img of=/dev/sdX bs=16M && sync # on linux | |
| # Boot from the usb. If the usb fails to boot, make sure that secure boot is disabled in the BIOS configuration. | |
| # This assumes a wifi only system... | |
| wifi-menu | |
| # Create partitions | |
| cgdisk /dev/sdX | |
| 1 100MB EFI partition # Hex code ef00 | |
| 2 250MB Boot partition # Hex code 8300 | |
| 3 100% size partiton # (to be encrypted) Hex code 8300 | |
| mkfs.vfat -F32 /dev/sdX1 | |
| mkfs.ext2 /dev/sdX2 | |
| # Setup the encryption of the system | |
| cryptsetup -c aes-xts-plain64 -y --use-random luksFormat /dev/sdX3 | |
| cryptsetup luksOpen /dev/sdX3 luks | |
| # Create encrypted partitions | |
| # This creates one partions for root, modify if /home or other partitions should be on separate partitions | |
| pvcreate /dev/mapper/luks | |
| vgcreate vg0 /dev/mapper/luks | |
| lvcreate --size 8G vg0 --name swap | |
| lvcreate -l +100%FREE vg0 --name root | |
| # Create filesystems on encrypted partitions | |
| mkfs.ext4 /dev/mapper/vg0-root | |
| mkswap /dev/mapper/vg0-swap | |
| # Mount the new system | |
| mount /dev/mapper/vg0-root /mnt # /mnt is the installed system | |
| swapon /dev/mapper/vg0-swap # Not needed but a good thing to test | |
| mkdir /mnt/boot | |
| mount /dev/sdX2 /mnt/boot | |
| mkdir /mnt/boot/efi | |
| mount /dev/sdX1 /mnt/boot/efi | |
| # Install the system also includes stuff needed for starting wifi when first booting into the newly installed system | |
| pacstrap /mnt base base-devel grub-efi-x86_64 vim git efibootmgr dialog wpa_supplicant gnome gnome-extra bluez-utils | |
| # 'install' fstab | |
| genfstab -pU /mnt >> /mnt/etc/fstab | |
| # Make /tmp a ramdisk (add the following line to /mnt/etc/fstab) | |
| tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0 | |
| # Change relatime on all non-boot partitions to noatime (reduces wear if using an SSD) | |
| # Enter the new system | |
| arch-chroot /mnt /bin/bash | |
| # Setup system clock | |
| rm /etc/localtime | |
| ln -s /usr/share/zoneinfo/America/Chicago /etc/localtime | |
| hwclock --systohc --utc | |
| # Set the hostname | |
| echo MYHOSTNAME > /etc/hostname | |
| # Enable locale(s) | |
| vim /etc/locale.gen | |
| locale-gen | |
| echo LANG=en_US.UTF-8 >> /etc/locale.conf | |
| echo LANGUAGE=en_US.UTF-8 >> /etc/locale.conf | |
| echo LC_ALL=en_US.UTF-8 >> /etc/locale.conf | |
| # Set password for root | |
| passwd | |
| # Add real user remove -s flag if you don't whish to use zsh | |
| # useradd -m -g users -G wheel MYUSERNAME | |
| # passwd MYUSERNAME | |
| # Configure mkinitcpio with modules needed for the initrd image | |
| vim /etc/mkinitcpio.conf | |
| # Add 'ext4' to MODULES | |
| # Add 'encrypt' and 'lvm2' to HOOKS before filesystems | |
| # Move 'keyboard' before encrypt in HOOKS | |
| # Regenerate initrd image | |
| mkinitcpio -p linux | |
| # Setup grub | |
| grub-install | |
| In /etc/default/grub edit the line GRUB_CMDLINE_LINUX to GRUB_CMDLINE_LINUX="cryptdevice=/dev/sdX3:luks:allow-discards" then run: | |
| grub-mkconfig -o /boot/grub/grub.cfg | |
| # Enable desired services | |
| systemctl enable gdm | |
| systemctl enable bluetooth | |
| systemctl enable NetworkManager | |
| # Exit new system and go into the cd shell | |
| exit | |
| # Unmount all partitions | |
| umount -R /mnt | |
| swapoff -a | |
| # Reboot into the new system, don't forget to remove the cd/usb | |
| reboot |
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