I have installed ubuntu 18.04 on my 500gb hard drive using usb stick. no partitions done, used entire disk. Installation was successful. And, on reboot(first boot) it shows
A bootable device has not been detected. But, I can boot to ubuntu 18.04 after selecting boot device(usb) from boot menu. How can I load OS without selecting hard drive from boot menu.
may be MBR is stored in usb.
used startup disk creator for creating bootable usb