I'm not understanding about the disk partitioning with Windows 10 for a dual boot. I'm just able to boot with legacy devices (Ubuntu), but when I try to boot in efi mode, then the default boot device is missing. I've created a bootable USB stick:
sudo dd if=~/Downloads/ubuntu-18.04.2-desktop-amd64.iso of=/dev/sdb bs=1M status=progress
I was following an installation tutorial, and now I have the following disk partitions:
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 534527 532480 260M EFI System
/dev/nvme0n1p2 534528 567295 32768 16M Microsoft reserved
/dev/nvme0n1p3 567296 210282495 209715200 100G Microsoft basic data
/dev/nvme0n1p4 498069504 500117503 2048000 1000M Windows recovery environment
/dev/nvme0n1p5 210282496 210286591 4096 2M BIOS boot
/dev/nvme0n1p6 210286592 218675199 8388608 4G Linux swap
/dev/nvme0n1p7 218675200 498069503 279394304 133,2G Linux filesystem
Does someone have a suggestion how grub can handle this partition or how I should reinstall Ubuntu?
I booted linux in efi mode without security boot, reinstalled linux beside windows
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 534527 532480 260M EFI System
/dev/nvme0n1p2 534528 567295 32768 16M Microsoft reserved
/dev/nvme0n1p3 567296 197165314 196598019 93.8G Microsoft basic data
/dev/nvme0n1p4 498069504 500117503 2048000 1000M Windows recovery environment
/dev/nvme0n1p5 197167104 498069503 300902400 143.5G Linux filesystem
Now I getting a message in blue blue box from bios:
DEFAULT BOOT DEVICE MISSING OR BOOT FAILED. INSERT RECOVERY MEDIA AND HIT ANY KEY.
Something is missing.
