[Bug 1967939] [NEW] I've accidentaly deleted the boot kernel

[Serkan Yayla]

Public bug reported:

I'm using Ubuntu with Windows10 dual boot. I made some customizations to the GRUB2 with grub-customizer and one day somehow it crashed and doesn't show the Windows10. When i was tweaking with the files and thing i saw one backup file which I don't exactly remember the actual name. There are some script files and description about how to restore it. I did exactly the same things what is written in this description. Since then i didn't aware there was a core of OS, named "vmlinuz" which boots the whole OS.
I found this way to save all the things I've done in Ubuntu Studio back then. Then this "fatal error" comes to the screen when installation finished. I'm reporting it here with the details so i always remember this if I'm gonna be mess with the bash scripts. 
Sincerely.... 
Ubuntusuzluk Özlemi

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15.19
ProcVersionSignature: Ubuntu 5.13.0-30.33~20.04.1-lowlatency 5.13.19
Uname: Linux 5.13.0-30-lowlatency x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.445.1
Date: Tue Apr  5 21:00:10 2022
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntustudio.seed only-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu-Studio 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug focal ubiquity-20.04.15.19 ubuntustudio

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https://bugs.launchpad.net/bugs/1967939

Title:
  I've accidentaly deleted the boot kernel

Status in grub-installer package in Ubuntu:
  New

Bug description:
  I'm using Ubuntu with Windows10 dual boot. I made some customizations to the GRUB2 with grub-customizer and one day somehow it crashed and doesn't show the Windows10. When i was tweaking with the files and thing i saw one backup file which I don't exactly remember the actual name. There are some script files and description about how to restore it. I did exactly the same things what is written in this description. Since then i didn't aware there was a core of OS, named "vmlinuz" which boots the whole OS.
  I found this way to save all the things I've done in Ubuntu Studio back then. Then this "fatal error" comes to the screen when installation finished. I'm reporting it here with the details so i always remember this if I'm gonna be mess with the bash scripts. 
  Sincerely.... 
  Ubuntusuzluk Özlemi

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.15.19
  ProcVersionSignature: Ubuntu 5.13.0-30.33~20.04.1-lowlatency 5.13.19
  Uname: Linux 5.13.0-30-lowlatency x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27.21
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.445.1
  Date: Tue Apr  5 21:00:10 2022
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntustudio.seed only-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu-Studio 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
  ProcEnviron:
   LANGUAGE=en_US.UTF-8
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   LC_NUMERIC=C.UTF-8
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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