[Bug 1849672] [NEW] upgrade stopped during installation, now i cannot reinstall or reboot

[Myriam]

Public bug reported:

how do i fix this?

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubiquity 19.04.9
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CasperVersion: 1.405
Date: Thu Oct 24 15:04:12 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-budgie.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu-Budgie 19.04 "Disco Dingo" - Release amd64 (20190416)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: grub-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug disco ubiquity-19.04.9 ubuntu-budgie

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https://bugs.launchpad.net/bugs/1849672

Title:
  upgrade stopped during installation, now i cannot reinstall or reboot

Status in grub-installer package in Ubuntu:
  New

Bug description:
  how do i fix this?

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: ubiquity 19.04.9
  ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
  Uname: Linux 5.0.0-13-generic x86_64
  ApportVersion: 2.20.10-0ubuntu27
  Architecture: amd64
  CasperVersion: 1.405
  Date: Thu Oct 24 15:04:12 2019
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-budgie.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu-Budgie 19.04 "Disco Dingo" - Release amd64 (20190416)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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