U盘安装Ubuntu 14.04 LTS正式版 出现如下的提示，不能继续，如何操作？

I had a problem (minor annoyance) when booting up Arch linux with a USB drive connected. The problem was, upon boot I was receiving the following messy output to the console:

[sdb] No Caching mode page present
[sdb] Assuming drive cache: write through