I recently, for fun, tried to take an old computer, format it, and install a dual OS (Windows 10 Home and Ubuntu 18.04) I successfully got both of them installed and running, but to switch between them, I have to use the device's boot selector instead of Ubuntu's convenient grub interface. It does show, but not on boot-up. See the image below for the exact boot order.
No matter what I do, I can't get it to show grub on boot-up. I've tried changing the EFI within Ubuntu (it resets after restart), changing within Windows (no option), changing from BIOS (no option), reinstalling grub like 3 times (no effect) and everything else. Can someone please help me get grub to show on first startup?
Here is the output of
sudo parted -l :
Model: ATA ST750LM022 HN-M7 (scsi) Disk /dev/sda: 750GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 524MB 523MB ntfs Basic data partition hidden, diag 2 524MB 629MB 105MB fat32 EFI system partition boot, esp 3 629MB 646MB 16.8MB Microsoft reserved partition msftres 4 646MB 393GB 393GB ntfs Basic data partition msftdata 5 393GB 744GB 351GB ext4 6 744GB 750GB 6328MB linux-swap(v1)
I checked, both Windows 10 and Ubuntu 18.04 are in UEFI.