This question already has an answer here:
Some info first:
- I have 2 SSDs
- Windows 10 is installed on disk 1
- Ubuntu is installed on disk 2
- Boot/BIOS is set to "Legacy" and not "UEFI"
First time I tried to install Ubuntu to the second disk I chose
Something else in this menu, then created 2 mountpoints (for
/ and for
/home) on disk2. However during the installation I got this error
The 'grub-efi-amd64-signed' package failed to install into /target/. Without the GRUB boot loader, the installed system will not boot.
When I clicked ok, the installation was aborted and a bug report opened (don't have the URL anymore). On this bug report was something written like "it will work if you select 'Erase disk and install Ubuntu'".
(Note that after this failure Windows could still boot).
So because of this the first thing I tried was to convert my Windows MBR to GPT. However executing
mbr2gpt /validate always gave me:
Cannot find OS partition(s) for disk 0 (also tried the other disks, didn't work too). Anyway I then decided to not continue pursuing this, because I don't really care if I have UEFI or not.
So I did the following:
Since I have the luxury of having an entire disk anyway, I restarted the installation, selected 'Erase disk and install Ubuntu', then selected the correct disk (yes I'm positive that I did ;) ) and the installation run through.
My Ubuntu can now happily boot.
However the GRUB menu does not appear and this also doesn't help:
patrick@patrick-ubuntu:~$ sudo update-grub [sudo] password for patrick: Generating grub configuration file ... Found linux image: /boot/vmlinuz-4.15.0-32-generic Found initrd image: /boot/initrd.img-4.15.0-32-generic Found linux image: /boot/vmlinuz-4.15.0-29-generic Found initrd image: /boot/initrd.img-4.15.0-29-generic Adding boot menu entry for EFI firmware configuration done
Anyway I'm still positive it should somehow be possible to still boot Windows right? Since I'm pretty sure that my original Windows 10 disk is still untouched.
However I have no idea how to proceed. Any help is appreciated :)
Boot report: http://paste.ubuntu.com/p/rVymP7m6tt/