I just installed Ubuntu 14.04 on a pendrive, by following this tutorial: http://www.fernhilllinuxproject.com/guidesandhowtos/installubuntutousbdrive.html .
The problem is that when I turn on the laptop without the pendrive I get "Minimal BASH-like line editing is supported.[...]" grub message. But when I turn it on with the pendrive, I am able to boot into Ubuntu or Windows 8.1 and both works fine.
Can anyone explain why this happened? What can I do to boot directly into Windows when the pendrive is not inserted?
Thank you for your help.