NUC Install Issues - nvme pcie drive

[gold_finger]

One final thought:

Can you set the boot priority to boot from the standard HDD first instead of the new drive?  If so, maybe try installing grub to MBR on that drive and see if it makes any difference trying to boot from there.

Boot live LL dvd/usb and do following in a terminal:

Code:

sudo mount /dev/nvme0n1p3 /mnt
sudo grub-install boot-directory=/mnt/boot /dev/sda
sudo umount /mnt

Reboot without dvd/usb and with boot priority set to regular hard drive in first position.

If doesn't work, undo the edits to /etc/default/grub made according to my prior post, (run "update-grub" after re-edit, while in chroot); then try rebooting again.

If it works then at least you'll have a solution that makes computer usable.  Can keep it like that until find solution to booting with grub on MBR of new drive.  Only thing that's happening is the very initial grub boot stage is on MBR of standard drive and passes boot process on to root partition on new drive after that -- so I doubt whole boot process will be significantly different than if it started from MBR of new drive.