[Bug 1922342] Re: HIrsute live session does not work on BIOS systems

[Chris Guiver]

Thank you for taking the time to report this problem, and help making
Ubuntu better.

QUESTION: What OS & release are you writing the thumb-drive with? (ie.
details of the GNOME-DISKS and StartUp Disk Creator,  as I wonder if
it's how you write your ISO to media.

I am writing various ISOs (mainly Lubuntu, but other flavors too and on
occasion Ubuntu) to thumb-drive and booting it on various BIOS only
devices (hp dc7700, dc7900, dell 745, 755, 780 etc).

I personally use `mkusb` to write my media, but regularly also just use
`dd`.., but I'm usually writing media on a hirsute box (hence the
request for details on what OS/release you use to write your ISO)

I note your `lshw` shows an "i5-3570" CPU which is more modern than any
BIOS only box I use (my boxes are c2d (t6570, u9400, e6600, e6850,
e8300..), c2q-q9400 etc) so maybe it's a quirk on your hardware,
compared to the older hp, dell, lenovo.. I test with.

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https://bugs.launchpad.net/bugs/1922342

Title:
  HIrsute live session does not work on BIOS systems

Status in casper package in Ubuntu:
  New

Bug description:
  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)

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