Comment 0 for bug 1922342

I think the problem is the same as described here: https://discourse.ubuntubudgie.org/t/20-10-grub-error-can-t-find-command-grub-platform/4292. I can see prior to grub menu, briefly, the same error: Error can't find grub_platform. After the solution described below, this error is not showed and the system is able to boot.

I try making the live usb using startup disk creator and with gnome-disks --> Restore disk image and get the same results.

The live-usb has a gpt partition table instead of mbr like 20.04 live-usb has. That implies, I think, that the first one does not boot on BIOS systems and the second does.

I try the same live-usb on an EFI laptop and it boots perfectly (perhaps it takes long time).

If I try the solution described here: https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1905491/comments/8 then it works.

I think it is the same bug but I reported it again because, I don't know exactly why, it was tagged as invalid, but I think it is a bug and it must be solved because it's not normal that users with BIOS pc's have to do all this procedure to get a live session working.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: casper 1.461
ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7
Uname: Linux 5.11.0-13-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu61
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.461
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 2 09:55:24 2021
LiveMediaBuild: Ubuntu 21.04 "Hirsute Hippo" - Beta amd64 (20210331.1)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=gl_ES.UTF-8
 SHELL=/bin/bash
SourcePackage: casper
UpgradeStatus: No upgrade log present (probably fresh install)