I recently bought a XPS 15 with Windows 8.1 on it and I'd like to install Ubuntu 14.10 along the side. I've copied the .iso file on a USB stick and registered it as a boot option in the BIOS/UEFI. I've disabled in BIOS the Secure Boot option as well as the Intel Fast Response Technology.
The issue that I have is that when I choose to run the UEFI ubuntu installation boot option, after about a minute, the startup of windows bootloader kicks in. I have to mention, that in the case that i use the secure boot option as enabled, a warning window saying that the signature is invalid is displayed after which the installation is aborted.
I've also USB Universal Installer with the Ubuntu .iso file, and when using the Legacy boot mode, I get to the installation screen of Ubuntu. I'll probably try to install it this way and afterwards convert it to EFI as described here : https://help.ubuntu.com/community/UEFI#Setup_the_BIOS_in_EFI_or_Legacy_mode
I've followed the instructions presented on several other resources on this topic :
but I haven't seen any resources on how to deal with the issue that I'm dealing with.
I've tried before going on with the changes to start the boot-repair-disk as a Boot option and i get the same result as for the Ubuntu installation iso, after aprox. 1 minute Windows bootloader kicks in.