Need help restoring Ubuntu 16.04
A partition and disk imaging/cloning program
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steven_shiau
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Hello everyone, I'm attempting to restore a custom Ubuntu 16.04 image to a machine with SecureBoot enabled. It restores fine, but when I reboot, I get a message that the "Operating System Loader signature not found in SecureBoot database ('db')." The image was taken machine with SecureBoot enabled as well. Did I miss a step? I'd like not to have to disable SecureBoot, thanks.
Maybe you can turn off the secureboot from BIOS first, then boot your machine to Ubuntu 16.04, and run the grub install again.
Steven