Comment 31 for bug 1059827

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Chris Bainbridge (chris-bainbridge) wrote :

I hit this bug in a different way with 14.04:

Use fdisk to create a new mbr and single partition on a USB-connected drive
mkfs.btrfs the partition
Run installer and select the partition as root, and drive device as grub target

After grub fails the installer exits. fdisk reports the partition starts at 2048. gdisk reports that the drive has a valid MBR and valid GPT main header but corrupt GPT backup. At no point did I format the drive as GPT - I wonder if ubiquity automatically adds a GPT header causing the subsequent grub install with btrfs to fail?