I am trying to install Ubuntu 18.04 with GPT and RAID1 (mirroring) on 2 same size disks, with no other OS installed, but installation fails at GRUB. Is this an Ubuntu bug!? By default GRUB should install on both disks (sda&sdb), but the installer is failing to recognize the disks and throwing errors.
Note: I tried including the bios-grub partition into RAID but it didn't work, and same error.
Let me know any suggestion to resolve this issue.
RED FLAG
Simular issue here with secure boot enabled and dual boot with Ten (GPT), when clicking install Ubuntu, Ubiquity won't install Grud near the end and a fatal error occurs ending the install. Passing by Try Ubuntu works normally.
This bug has been present for more than a month in all flavors of DD (1709,19H1,20H1). Works normally when not dual boot. Bootline is tweaked with iommu=soft. With or without MOK Manager. The fatal error was sent twice via Ubiquity 3 weeks ago (Mate and U).
