i've just install ubuntu 18.04 (single boot) on my acer es1-132-c7kk, but after instalation "no bootable device shown up".
i've check via gparted on live USB, my drive still there but the status not mounted. and mount button is greyed out.
please help me to solve this problem
my partition :
/dev/sda1 efi , /dev/sda2 ext4 / , /dev/sda3 ext4 /usr , /dev/sda4 swap
i burn ubuntu with rufus 2.18 partition scheme and target system type : GPT