Thursday, 8 August 2019

Quickstart: Installing Arch Linux 2019.X

Firstly download the latest iso image from one of the mirrors below:
and then write it to your preferred media:
dd bs=8M if=archlinux-xxxx.xx.xx-x86_64.iso of=/dev/sdX | sync
Upon booting the image select the default selection to boot Arch.

This will get you into the system under the root user.

The setup portion is a Gentoo style approach of efffectively 'assembling' the system yourself.

From here we'll firstly partition the disks:
sdX               8:0    0 1000G  0 disk 

In this example we'll create three partitions - one for the root fs, another for our home fs and finally one for swap.
parted -a optimal /dev/sdXhyu
mktable gpt
mkpart ESP boot fat32 0% 500MB
mkpart root ext4 500MB 250000MB
mkpart home ext4 250GB 750GB
mkpart swap ext4 750GB 800GB
set 1 boot on
Create the filesystems with:
mkfs.msdos /dev/sdX1
mkfs.ext4 /dev/sdX2
mkfs.ext4 /dev/sdX3
mkfs.ext4 /dev/sdX4
mkswap /dev/sdX4
swapon /dev/sdX4
Proceed by mounting the file systems:
mount -t auto /dev/sdX2 /mnt
mkdir -P /mnt/boot/EFI && mount -t auto /dev/SdX1 /mnt/boot/EFI
mkdir /mnt/home && mount -t auto /dev/SdX3 /mnt/home
We'll need the network setup at this point so we can access the arch repo's:
and then pull down all the nessasery compontents for the root fs:
pacstrap /mnt base base-devel
Once complete we'll need to generate the fstab for the new system:
genfstab -U /mnt >> /mnt/etc/fstab
and then change our root password by chrooting into the new system along with the hostname:
arch-chroot /mnt
hostname arch-box
We'll also configure regional and time settings with:
ln -sf /usr/share/zoneinfo/<region>/<city> /etc/localtime
hwclock --systohc
printf "LANG=en_GB.UTF-8" > /etc/locale.conf
export LANG=en_GB.UTF-8
I'm going to use KDE Plasma for the desktop environment:
pacman -S xorg xorg-server xorg-xinit plasma-meta sddm
Finally we will configure grub:
pacman -S grub efibootmgr dosfstools os-prober mtools
grub-install --target=x86_64-efi --efi-directory=/boot/EFI --bootloader-id=grub_uefi --recheck
grub-mkconfig -o /boot/grub/grub.cfg
Exit the jail:
and restart:
shutdown -r now
Once booted into the new OS we'll setup the network configuration - for this example I'll be setting up DHCP.

With Arch we have a few options for network configuration - either netctl or networkd (a newer component.)
vi /etc/netctl/enp2s0
Description=LAN interface
Ensure the interface will come up on boot by issuing:
netctl enable enp2s0
Enable and start the DHCP service with:
systemctl enable dhcpcd
systemctl start dhcpcd
and then attempt to start the interface with:
netctl start enp2s0


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