Using the Acer Chromebook R 13 (google/elm) the recovery screen says

> Hilfe erhalten Sie unter https://google.com/chromeos/recovery .

Please use the more secure HTTPS URL, and please put the *www.* in the URL.

```
$ curl -I http://google.com/chromeos/recovery
HTTP/1.1 301 Moved Permanently
Location: https://www.google.com/chromeos/recovery
Content-Type: text/html; charset=UTF-8
X-Content-Type-Options: nosniff
Date: Thu, 12 Oct 2017 12:56:29 GMT
Expires: Sat, 11 Nov 2017 12:56:29 GMT
Cache-Control: public, max-age=2592000
Server: sffe
Content-Length: 237
X-XSS-Protection: 1; mode=block

$ curl -I https://google.com/chromeos/recovery
HTTP/2 301 
location: https://www.google.com/chromeos/recovery
content-type: text/html; charset=UTF-8
x-content-type-options: nosniff
date: Thu, 12 Oct 2017 12:56:34 GMT
expires: Sat, 11 Nov 2017 12:56:34 GMT
cache-control: public, max-age=2592000
server: sffe
content-length: 237
x-xss-protection: 1; mode=block
alt-svc: quic=":443"; ma=2592000; v="39,38,37,35"

```