Hi all I'm a bit green on this, have searched previous Q/A and tried multiple suggestions to no avail so far. I usually get around fairly well but this whole boot-ordeal is an unexplored wormhole for me so bare with me and thanks for any suggestions. Feel free to ask for clarification/elaboration or logs (if you can suggest how to generate them)
Objective: Dualboot Ubuntu19/Win10, Separate drives.
- Win10 running longtime installed on an nvme drive. Uefi according to system info in windows and all things setup-menu during boot suggest uefi.
- This Friday I cleaned out an SSD for ubuntu that's always been in the computer, I found what appeared to be an EFI-partition on that drive confident it had to be the remains of an old installation from another machine or so. It wasn't.
- After some manual trickery found on neosmart and using easyRE I managed to get my win10 to boot again from a EFI-partition on the nvme.
- Installed Ubuntu on the other SSD. The "install alongside windows"-path wasn't available when I loaded the USB-drive as UEFI, and when I went there I couldn't get it to show my SSD as a choice, it only showed a mechanical drive I use for project files.
- I picked "something else" and made one primary ext4 partition for "/" one for swap and one for "/home"
- End of installation I get the " GRUB couldn't be installed on this partition fatal error ."
- How should I proceed now?
- Where should the efi-files be located, since it's multiple drives? Should both have a partition for them or does the grub-files go into the efi-folders on the nvme(windows)-drive?
- Can I just copy the files there and from where, or do they need to be "built" for my system?
- Also, is it important wether I set my root home and swap partitions as primary or logical, and in which order I create them?
Tried so far:
- Tried boot repair with suggested repair but to no avail. It hinted at success but still boots to win10 and if I force it to windows boot manager it says I need to repair my computer.