I have just installed Ubuntu 13.04 on my Acer E1-571 Aspire Laptop and it is located on the
/dev/sda2 device (which thing I can't see because I am logged into my live USB at the moment and when I use click Install Ubuntu 13.04 with custom settings I see a partition manager) but when I boot I can't seem to log into it. I have tried changing my boot manager such that I log into my HDD and it doesn't seem to do a thing because an error message comes up.
EDIT: The error message is (in BIOS)
HDD: has been blocked by the current security policy.