I was having the same issue with 15.10 install media but resolved it by booting into the live session, opening a terminal, using fdisk to create a new GPT table, making one giant partition, formatting it, then proceeding with install. Install went off without a hitch.
I was having the same issue with 15.10 install media but resolved it by booting into the live session, opening a terminal, using fdisk to create a new GPT table, making one giant partition, formatting it, then proceeding with install. Install went off without a hitch.