** Description changed:

  Machines which are managed by MAAS are configured to always network
  boot. When an operating system is deployed grub is sent[1] a
  configuration file which searches drives for recognized boot loaders.
  When the local disk is a SATA drive this process is not working. The
  config exits at the end to fallback to booting the next configured
- device but this config does not always exist. In that case the
- deployment fails.
+ device but this config does not always exist(e.g LP:1906379). In that
+ case the deployment fails.
  
  I've verified this happens with grub from
  Focal(1.142.9+2.04-1ubuntu26.7) and Bionic(1.93.22+2.02-2ubuntu8.20).
  
  Reproduction:
  1. Create a KVM which uses an emulated SATA drive and UEFI firmware.
  2. Add the machine and commission it in MAAS
  3. Try deploying any operating system. CentOS 8 currently fails to deploy 
because it does not create a UEFI entry.
  
  [1]
  
https://git.launchpad.net/maas/tree/src/provisioningserver/templates/uefi/config.local.amd64.template

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https://bugs.launchpad.net/bugs/1906344

Title:
  grub is unable to chainboot from network to SATA drive

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