My desire is to do the following.
The computer has W8.1 on the HDD and it is using UEFI I want to install Ubuntu 15.04 on 32GB USB stick in a way that I can install regular updates and it remembers my settings and programs. When I remove the USB - I want the windows boot to start windows automatically (to avoid GRUB on the HDD at all)
I tried to install from live USB to /dev/usbdrive. However - even I pointed that the boot loader should be on /dev/usbdrive it still utilized the hard drive (and in such way mingled with the windows boot loader).
I checked the following guide How to create UEFI-only bootable USB live media? It looks to me however that it is done on fat32 There is 1 main program that I need on this computer specifically and it is darktable.
Can you point me to some guide that I can follow step by step please? My first attempt ended up with restoring the whole HDD (thanks to clonezilla).