Install Arch Linux manually in virt-manager

installarch.txt

Install Arch Linux in Virtual Manager (using CentOS)

Ref:
  https://wiki.archlinux.org/title/installation_guide
  https://itsfoss.com/install-arch-linux/

- Add new connection and select arch iso
- 1 GiB RAM and 5 GiB of Disk space is enough for headless install
- It will boot with BIOS mode (not UEFI)
- Check connection with
 # ping google.com


Partition the harddisk
 # fdisk -l
 # fdisk /dev/vda
  : n
  Partition type : (Enter)
  Partition number : (Enter)
  First sector : (Enter)
  Last Sector: +2G
  : t
  Hex code: 82
  : n
  Partition type : (Enter)
  Partition number : (Enter)
  First sector : (Enter)
  Last Sector: (Enter)
  : w


Format as swap and turn it ON
 # mkswap /dev/vda1
 # swapon /dev/vda1


Format as ext4 and mount
 # mkfs.ext4 /dev/vda2
 # mount /dev/vda2 /mnt


Download and install packages to the hard disk
 # pacstrap -K /mnt base linux networkmanager nano
base contains all packages required for linux to work and
linux packages contains the kernel
It will download (345.47 MiB in my case) stuff from Internet, so wait until it finishes


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

Change root to the newly generated system
 # arch-chroot /mnt




Now you are in your newly installed arch linux
Let's configure it

Time Zone
 # ln -sf /usr/share/zoneinfo/Asia/Kolkata /etc/localtime
 # hwclock --systohc

Localization
 Uncomment "en_IN UTF-8" in /etc/locale.gen file
 # locale-gen
 # echo LANG=en_IN.UTF-8 > /etc/locale.conf (_ will be in variables beginning with XDG)
 # export LANG=en_IN.UTF-8

Network configuration
 # echo myarch > /etc/hostname
 # nano /etc/hosts
   127.0.0.1 localhost
   ::1 localhost
   127.0.1.1 myarch
 # systemctl enable NetworkManager

Put Root password
 # passwd

Install Grub bootloader to the disk (6.83 MiB is Downloaded in my case)
 # pacman -S grub
 # grub-install /dev/vda
 # grub-mkconfig -o /boot/grub/grub.cfg

Exit from chroot
 # exit

Unmount mnt
 # umount /mnt

Reboot the Virtual Machine
 # reboot