Archlinux - GPT and Grub2 on one disk

gistfile1.txt

# Download and verify iso
gpg --verify archlinux-2017.01.01-dual.iso.sig 

# Burn iso to USB
dd if=archlinux-*.iso of=/dev/sdX bs=16M && sync  

# Boot usb image and set root passwd (this is a temp password used for install only)
passwd

# Ensure time is correct
timedatectl set-ntp true

# Start ssh to connect using another computer
systemctl start sshd.service

# Get IP address
ip addr

# Log into computer from another machine using root user
ssh root@<ip address>

# This gist is designed to work with one harddrive - sda
# I will have a bios boot partition (1M), swap (16G), and the rest will be mounted to /
gdisk /dev/sda

o<enter> Y<enter>
n<enter> 1<enter> <enter> +1M<enter> ef02<enter>
n<enter> 2<enter> <enter> +16G<enter> 8200<enter>
n<enter> 3<enter> <enter> <enter> 8300<enter>

# Verify partitions
p<enter>

# Write partitions
w<enter> Y<enter>

# Format partitions
mkswap /dev/sda2
swapon /dev/sda2
mkfs.ext4 /dev/sda3

# Mount the volumes
mount /dev/sda3 /mnt

# Check pacman.d mirrolist and comment out any that you do not want to use
vim /etc/pacman.d/mirrorlist

# Install Arch
pacstrap /mnt base base-devel vim linux linux-firmware

genfstab -U /mnt >> /mnt/etc/fstab  # The -U option pulls in all the correct UUIDs for your mounted filesystems.

cp /etc/pacman.d/mirrorlist /mnt/etc/pacman.d/mirrorlist

arch-chroot /mnt

unlink /etc/localtime
ln -s /usr/share/zoneinfo/US/Mountain /etc/localtime

hwclock --systohc

sed -i '/#en_US.UTF-8 UTF-8/s/^#//' /etc/locale.gen
locale-gen
echo "LANG=en_US.UTF-8" > /etc/locale.conf

# Assign your hostname
echo "ew" > /etc/hostname

echo "127.0.0.1 localhost" >> /etc/hosts
echo "::1 localhost" >> /etc/hosts
echo "10.0.0.7 ew.tjc.im ew" >> /etc/hosts

# Enable dhcpcd
systemctl enable dhcpcd.service

# Set root password
passwd

# Create user
useradd -m -G wheel -s /bin/bash trevor
passwd trevor

visudo # Uncomment line: '%wheel ALL=(ALL) ALL'

pacman -Sy grub
grub-install --target=i386-pc /dev/sda

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

# Exit Your New Arch System
exit

# Unmount all partitions
umount -R /mnt
swapoff -a

# Reboot
reboot

# Login locally to the machine and install openssh
sudo pacman -S openssh python

# Start the SSH server
sudo systemctl start sshd.socket