[Bug 1816240] Re: Impossible to boot 18.04.2 from btrfs

[BertN45]

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.

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https://bugs.launchpad.net/bugs/1816240

Title:
  Impossible to boot 18.04.2 from btrfs

Status in ubiquity package in Ubuntu:
  Incomplete

Bug description:
  Try to install Xubuntu 18.04.2 on btrfs, it failed to boot because grub could not find the kernel.
  The partition did have two directories @ and @home, the @ one contained all the root files, while the @home one contained the 'user' directory.

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