[Bug 1872736] [NEW] install from USB to USB device wipes grub setup on NVME disk

[Oliver Grawert]

Public bug reported:

For a system test I prepared a USB stick with the current focal iso,
booted from it and attempted an install to another (identical) USB disk.

During partitioning /dev/sdb (the USB disk) was picked as target for the bootloader installation, 
a 63GB ext4 partition for / and a 1GB swap partition were created. 

The install went flawless.

After finishing my testing I removed all USB keys and rebooted to find
out i am now greeted with a grub input prompt and have no way to boot
off the internal NVME disk anymore...

Plugging in the target USB stick that was used to install focal to gives
me a proper grub menu allowing me to select to boot the NVME
installation. So i can only boot with plugged in USB now, without it i
end up at a grub input prompt ...

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubiquity in Ubuntu.
https://bugs.launchpad.net/bugs/1872736

Title:
  install from USB to USB device wipes grub setup on NVME disk

Status in ubiquity package in Ubuntu:
  New

Bug description:
  For a system test I prepared a USB stick with the current focal iso,
  booted from it and attempted an install to another (identical) USB
  disk.

  During partitioning /dev/sdb (the USB disk) was picked as target for the bootloader installation, 
  a 63GB ext4 partition for / and a 1GB swap partition were created. 

  The install went flawless.

  After finishing my testing I removed all USB keys and rebooted to find
  out i am now greeted with a grub input prompt and have no way to boot
  off the internal NVME disk anymore...

  Plugging in the target USB stick that was used to install focal to
  gives me a proper grub menu allowing me to select to boot the NVME
  installation. So i can only boot with plugged in USB now, without it i
  end up at a grub input prompt ...

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1872736/+subscriptions