OK I installed again from CD on the real hardware on partition sdc5. I had the same old problem, but than I detected, that I told the BIOS some time ago to boot from the SSD. I did forget it completely and normally I have no problem, since I install the boot loader on all disks after running update-grub. I did set the BIOS back to sda and now the btrfs system boots as expected.
The only remaining problem is that update-grub from an ext4 disk does not detect the btrfs system. Basically the reason that I could not correct the problem directly. What do we do next, adapt this bug or cancel it and write a new one. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1816240 Title: Impossible to boot 18.04.2 from btrfs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1816240/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
