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The ' grub-efi-amd64-signed' package failed to install into / target/. Without the GRUB boot loader, the installed system will not boot.
This is the error I get every time I try to install 18.04. I have formatted the MBR and C drive of Windows and currently I have only
dev/sda to install. I don't want to lose other data which I had in Windows 10.
What should be the status of legacy mode and secure boot while installing Ubuntu 18.04?
I see only
dev/sda instead of
What should I do?