====== Info ======
Thinkpad T495s/16GB/256GB
===== ISO/Network =====
Download ISO https://archlinux.org/download/\\
write the ISO on a USB key\\
boot\\
\\
Setup network\\
<code bash>systemctl start iwd
iwctl </code>
<code>
iwd]# device list
                                    Devices                                    
--------------------------------------------------------------------------------
  Name                  Address               Powered     Adapter     Mode      
--------------------------------------------------------------------------------
  wlan0                 0c:7a:15:79:77:41     on          phy0        station   
iwd]# station wlan0 get-networks
                               Available networks                              
--------------------------------------------------------------------------------
      Network name                      Security            Signal
--------------------------------------------------------------------------------
      FuckUMeta                         psk                 ****    
      XXXXXXXXXXXXXXXX                  psk                 ****    
iwd]# station wlan0 connect FuckUMeta --passphrase **********************
iwd]# exit
</code>
<code bash>ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: enp3s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether XX:YY:ZZ:AA:BB:CC brd ff:ff:ff:ff:ff:ff
    altname enxf875a4853e1b
4: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether XX:YY:ZZ:AA:BB:CC brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.156/24 metric 600 brd 192.168.1.255 scope global dynamic wlan0
       valid_lft 84979sec preferred_lft 84979sec
    inet6 fdbf:275d:b681:f346:e7a:15ff:fe79:7741/64 scope global dynamic mngtmpaddr noprefixroute 
       valid_lft 1741sec preferred_lft 1741sec
    inet6 fe80::e7a:15ff:fe79:7741/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever</code>
===== Test + SSH =====
network OK ?\\
<code bash> ping -c3 archlinux.org</code>
Install SSH
<code bash> pacman -Sy
pacman -S openssh
vim /etc/ssh/sshd_config</code>
<code perl>
#PermitRootLogin prohibit-password
PermitRootLogin yes
</code>
<code bash>passwd
systemctl start sshd</code>
\\
Now we can connect from the network
===== Disk partitions =====
==== List ====

<code bash># gdisk /dev/nvme0n1 -l
GPT fdisk (gdisk) version 1.0.10

The protective MBR's 0xEE partition is oversized! Auto-repairing.

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/nvme0n1: 500118192 sectors, 238.5 GiB
Model: KXG6AZNV256G TOSHIBA                    
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): A49CF274-51B4-4CBF-BE13-5195151DBF6E
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 500118158
Partitions will be aligned on 2048-sector boundaries
Total free space is 205869677 sectors (98.2 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048          206847   100.0 MiB   EF00  EFI system partition
   2          206848          239615   16.0 MiB    0C01  Microsoft reserved ...
   3          239616       250570751   119.4 GiB   0700  Basic data partition
   4       250570752       292513791   20.0 GiB    0700  Basic data partition
   5       498378752       500115455   848.0 MiB   2700</code>
The goal is to make a 16GB swap partition and the btrfs root:
<code bash>gdisk /dev/nvme0n1</code>
==== SWAP ====

<code>
Command (? for help): n
Partition number (6-128, default 6): 
First sector (34-500118158, default = 292513792) or {+-}size{KMGTP}: 
Last sector (292513792-498378751, default = 498378751) or {+-}size{KMGTP}: +16G
Current type is 8300 (Linux filesystem)
Hex code or GUID (L to show codes, Enter = 8300): 8200
Changed type of partition to 'Linux swap'
</code>
==== BTRFS root ====

<code>
Command (? for help): n
Partition number (7-128, default 7): 
First sector (34-500118158, default = 326068224) or {+-}size{KMGTP}: 
Last sector (326068224-498378751, default = 498378751) or {+-}size{KMGTP}: 
Current type is 8300 (Linux filesystem)
Hex code or GUID (L to show codes, Enter = 8300): 
Changed type of partition to 'Linux filesystem'
</code>
==== Save ====

<code>
Command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!

Do you want to proceed? (Y/N): Y
OK; writing new GUID partition table (GPT) to /dev/nvme0n1.
The operation has completed successfully.
</code>

===== Mount/Format =====
==== SWAP ====
<code bash>mkswap        /dev/nvme0n1p6
swapon        /dev/nvme0n1p6
</code>
==== BTRFS ====
<code bash>
pacman -Sy btrfs-progs
mkfs.btrfs -L ArchRoot /dev/nvme0n1p7
mount /dev/nvme0n1p7 /mnt
btrfs subvolume create /mnt/@
btrfs subvolume create /mnt/@home
umount /mnt</code>
==== Mount /boot /home / ====
<code bash>
mount -o noatime,compress=zstd,space_cache,subvol=@ /dev/nvme0n1p7 /mnt
mkdir -p /mnt/{home,boot}
mkdir /mnt/boot/efi
mount -o noatime,compress=zstd,space_cache,subvol=@home /dev/nvme0n1p7 /mnt/home
mount        /dev/nvme0n1p1  /mnt/boot/efi
</code>
===== Pacstrap =====
<code bash>pacstrap /mnt base base-devel linux linux-firmware amd-ucode btrfs-progs vim dhcpcd networkmanager efibootmgr dosfstools sudo git tlp htop zsh</code>
===== FSTAB =====
<code bash>genfstab -U /mnt >> /mnt/etc/fstab</code>
===== Archlinux Machine setup =====
<code bash>
mount --types proc   /proc   /mnt/proc
mount --rbind /sys   /mnt/sys
mount --rbind /dev   /mnt/dev
arch-chroot /mnt /bin/bash
echo "Mjölnir" >/etc/hostname
echo LANG=en_US.UTF-8 > /etc/locale.conf
vim /etc/locale.gen</code>
uncomment
<code>en_US.UTF-8</code>
Generate locales<code bash>locale-gen</code>
==== fonts/keymap ====
<code bash>echo KEYMAP=us-acentos > /etc/vconsole.conf
echo FONT=lat9w-16 >> /etc/vconsole.conf</code>
==== TimeZone ====
<code bash>ln -sf /usr/share/zoneinfo/Europe/Zurich /etc/localtime</code>
==== /etc/hosts ====
<code bash>vim /etc/hosts</code>
<code perl>#<ip-address>	<hostname.domain.org>	<hostname>
127.0.0.1	<YOUR-HOSTNAME>.localdomain	<YOUR-HOSTNAME></code>
==== Initramfs ====
<code bash> vim /etc/mkinitcpio.conf</code>
<code perl>HOOKS=(base udev autodetect microcode modconf kms keyboard keymap consolefont block resume btrfs filesystems fsck)</code>
<code bash. mkinitcpio -P</code>
===== Systemdboot =====
<code bash>bootctl --esp-path=/boot/efi install</code>
==== Entries ====
default:
<code bash>cat > /boot/efi/loader/loader.conf <<EOF
default arch
timeout 5
EOF</code>
Archlinux:
<code bash>cat > /boot/efi/loader/entries/arch.conf <<EOF
title   Arch Linux
linux   /vmlinuz-linux
initrd  /amd-ucode.img
initrd  /initramfs-linux.img
options root=UUID=43a3c9d5-0253-4f24-af47-7c11f3f39753 rw rootflags=subvol=@,compress=zstd
EOF</code>
Note: 43a3c9d5-0253-4f24-af47-7c11f3f39753 = UUID from `blkid /dev/nvme0n1p7`
Windows shit:
<code bash>cat > /boot/efi/loader/entries/windows.conf <<EOF
title   Windows
efi     /EFI/Microsoft/Boot/bootmgfw.efi
EOF</code>

===== Final step =====
candles
<code bash>exit
umount -l /mnt/{dev,sys,proc}
umount /mnt/boot/efi
umount /mnt/{home,} 
reboot</code>


Notes:
  * remount btrfs partition:
<code bash>
mount -t btrfs \
  -o subvol=@,noatime,compress=zstd,space_cache=v2 \
  /dev/nvme0n1p7 /mnt</code>
  * Wifi shit
<code bash>cat > /tmp/wpa.conf <<EOF
network={
    ssid="MyNet"
    psk="PASTE-YOUR-64-CHAR-KEY-HERE"
    key_mgmt=WPA-PSK
}
EOF</code>
<code bash>wpa_supplicant -B -i wlan0 -c /tmp/wpa.conf
dhcpcd wlan0</code>