More information. I had 2 identical hard drives. /dev/sda1 and /dev/sda2 set up with software RAID1. Everything was in there /boot included. The RAID had been created with previous Ubuntu versions. I had been updating every 6 months for at least 2 years. The initial installation was the first Ubuntu version that had grub2.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1163086 Title: os-prober created a 11.6 MB grub.cfg file impossible to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1163086/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs