This is a step-by-step guide to install Arch Linux on the Lenovo Legion Y520 laptop. The process is fully UEFI-based and includes all the essential steps to configure the system properly. This guide is intended for advanced users who are familiar with Linux systems.

Before starting the installation, ensure you have:

• A bootable Arch Linux USB drive.
• An active internet connection.
• Backup of any important data from the device (installation will wipe all data on the disk).
• Access to UEFI/BIOS settings to boot from USB.

• 1. Verify System Connection
• 2. Set Keyboard Layout
• 3. Update System Clock
• 4. Partitioning the Disk
• 5. Format the Partitions
• 6. Mount the Partitions
• 7. Install Base System
• 8. Configure the System
• 9. Install Bootloader (GRUB)
• 10. Network Configuration
• 11. Finalizing the Installation

To ensure the internet connection is working properly, run:

ping -c 3 archlinux.org

Set the keyboard layout to Italian (or your preferred layout) by running:

loadkeys it

Synchronize the system clock with NTP:

timedatectl set-ntp true

Set the system timezone to Europe/Rome:

timedatectl set-timezone Europe/Rome

Use cfdisk or another partitioning tool to create the following partitions on your disk (/dev/nvme0n1 is used as an example):

• EFI (512MB)
• Swap (4GB)
• Root (/) (50GB)
• Home (/home) (Remaining space)

cfdisk /dev/nvme0n1

Format the partitions with the following commands:

mkfs.fat -F32 /dev/nvme0n1p1  # EFI Partition
mkswap /dev/nvme0n1p2        # Swap Partition
swapon /dev/nvme0n1p2        # Activate swap
mkfs.ext4 /dev/nvme0n1p3      # Root Partition
mkfs.ext4 /dev/nvme0n1p4      # Home Partition

Mount the root partition and create directories for other partitions:

mount /dev/nvme0n1p3 /mnt
mkdir /mnt/home
mount /dev/nvme0n1p4 /mnt/home
mkdir /mnt/boot
mkdir /mnt/boot/efi
mount /dev/nvme0n1p1 /mnt/boot/efi

Install the base system packages:

pacstrap /mnt base base-devel linux linux-firmware linux-headers intel-ucode nano git networkmanager

Generate the fstab file:

genfstab -U /mnt >> /mnt/etc/fstab

Chroot into the new system:

arch-chroot /mnt /bin/bash

ln -sf /usr/share/zoneinfo/Europe/Rome /etc/localtime
hwclock --systohc

Edit /etc/locale.gen and uncomment it_IT.UTF-8 UTF-8:

nano /etc/locale.gen

Generate locales:

locale-gen

Set the default language:

echo "LANG=it_IT.UTF-8" > /etc/locale.conf

echo "KEYMAP=it" > /etc/vconsole.conf

echo "archlegion" > /etc/hostname

nano /etc/hosts

Add the following lines:

127.0.0.1   localhost
::1         localhost
127.0.1.1   archlegion.localdomain    archlegion

passwd

Create a new user with sudo privileges:

useradd -m -G wheel,storage,power,audio,video,users -s /bin/bash username
passwd username

Edit the sudoers file to grant sudo privileges:

echo "username ALL=(ALL) ALL" | EDITOR=nano visudo

Install GRUB and related tools:

pacman -S grub efibootmgr dosfstools mtools --noconfirm

Install GRUB to the system:

grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=GRUB

Generate the GRUB configuration:

grub-mkconfig -o /boot/grub/grub.cfg

Enable NetworkManager for managing network connections:

systemctl enable NetworkManager

Exit chroot:

exit

Unmount all partitions:

umount -R /mnt

Reboot the system:

reboot

Remove the installation media to boot into the newly installed Arch Linux system.