My guess is you didn't actually installed everything. Take a look at [this][1].

> Be aware that `base` as it stands does not currently contain:<br/>
> - A kernel<br/>
> - An editor<br/> ... and other software that you might expect. **You will have to install these separately on new installations.**

Please make sure to always follow step by step the [Arch Wiki Installation guide][2].


 [1]: https://www.archlinux.org/news/base-group-replaced-by-mandatory-base-package-manual-intervention-required/
 [2]: https://wiki.archlinux.org/index.php/Installation_guide#Install_essential_packages