[Bug 1898584] [NEW] I followed this guide: https://www.youtube.com/watch?v=u5QyjHIYwTQ and once it tried to run grub2, it couldn't execute it

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I have an Ideapad 110, i tried to install Ubuntu with Windows 10 using
this guide: https://www.youtube.com/watch?v=u5QyjHIYwTQ and then the
installer crashed, also, i used a DVD instead of USB and the version of
Ubuntu is 20.04,

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15.2
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.445.1
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct  5 18:36:24 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 LANGUAGE=en_IL
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IL
 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-20.04.15.2 ubuntu
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I followed this guide: https://www.youtube.com/watch?v=u5QyjHIYwTQ and once it tried to run grub2, it couldn't execute it
https://bugs.launchpad.net/bugs/1898584
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