I'm attempting to install 16.04.4 LTS alongside an existing Windows 10 installation. I have several other partitions (GPT) in an attempt to preserve the a
/boot partition from a multi-boot attempt[, but I'm not trying to use that at the moment]. I deleted the partition from the last (defunct) Ubuntu install and designated that partition as
/ during the installation procedure. I selected
install to MBA on sda (not sda1 or any other numbered partition) for the GRUB installation. Installation completes and offers to restart, which I confirm. After reboot, Windows 10 comes up with no option for selecting Ubuntu.
This is on an i5 NUC, but I have legacy and UEFI boot both enabled.