I can confirm this bug affected update-grub and os-prober for me too. Although I didn't get any errors, just that the os-prober only saw the one OS installed on my IDE drive, but not the raids. Removing dmraid fixed it as well.
I can confirm this bug affected update-grub and os-prober for me too. Although I didn't get any errors, just that the os-prober only saw the one OS installed on my IDE drive, but not the raids. Removing dmraid fixed it as well.