I have Dell 5558 laptop with Windows 8.1 pre-installed. I want to install Ubuntu 14.04 alongside windows, so I downloaded the iso image. I then formatted my pendrive then using universal USB Installer I copied it to my USB and made it bootable. But after restarting I get grub> command line screen when I try to boot through my pendrive.
I dont know how to proceed afterwards. I have tried using ls command to find all directories, I get hd0 hd1 hd2 hd2,gpt1..7,hd3. But when I try to access them it shows undefined directory. hd2,gpt1 and hd2,gpt2 have some folders like Windows/ Boot/ Efi. In the Boot/ folder there is a file named boot.efi.(something). I dont remember exactly.