I wiped out Windows 10 from my Acer Aspire E15 to install Ubuntu 18.10 in single-boot. The installation worked but I keep getting at boot time a blue window with this message :
« Default Boot Device Missing or Boot failed. Insert recovery media and hit any key ».
Hitting a key would lead me to a Boot Option Menu with two entries:
Unknown Device : (ST500LT012-1DG142) (which is supposed to be my hard drive)
Yes
I searched on the net and tried some of the suggested solutions but none seems to work since I don't have problem with booting. Indeed when I select 1. then the boot works and everything is alright so I'm wondering whether there is something I have to fix and or not.
Any suggestion?
I could reinstall Ubuntu from scratch, but since I've already installed many application I'd like to avoid it.