For the guides:
- http://support.lenovo.com/us/en/documents/pd010811 – keyboard dissasembly
- http://www.sweclockers.com/galleri/10479-thinkpad-x40-msata-mod
- https://nixos.org/wiki/Installing_NixOS_from_a_USB_stick
- http://bluishcoder.co.nz/2014/05/14/installing-nixos-with-encrypted-root-on-thinkpad-w540.html
- https://wiki.archlinux.org/index.php/Installation_guide
- https://wiki.archlinux.org/index.php/USB_Installation_Media#BIOS_and_UEFI_Bootable_USB
- https://wiki.archlinux.org/index.php/Full_system_backup_with_rsync#With_a_single_command