[Bug 1874564] Re: I/O error installing Ubuntu 20.04

[Chris Guiver]

*** This bug is a duplicate of bug 1874571 ***
    https://bugs.launchpad.net/bugs/1874571

Thank you for taking the time to report this issue and helping to make
Ubuntu better.

This package failure looks like it was caused by bad ISO download,
corrupted install media, or device failure. eg. look in the logs and
you'll see messages like these :-

Apr 24 00:01:40 ubuntu kernel: [  329.409695] SQUASHFS error: zlib decompression failed, data probably corrupt
Apr 24 00:01:40 ubuntu kernel: [  329.409704] SQUASHFS error: squashfs_read_data failed to read block 0x37545

Examining the information you have given us, this does not appear to be
a useful bug report so I am closing it, as it appears to be a bad ISO or
faulty device (inc. bad write-to-device). If you believe I'm in error,
please leave a comment explaining why and change the status back to
'New'. I suggest you verify your ISO download, and note the validation
of your ISO before install to ensure a good download & write.

Possibly useful : https://tutorials.ubuntu.com/tutorial/tutorial-how-to-
verify-ubuntu#0

** Changed in: ubiquity (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1874564

Title:
  I/O error installing Ubuntu 20.04

Status in ubiquity package in Ubuntu:
  Invalid

Bug description:
  All I know is that once the installation started it crashed with a I/O
  error.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.9
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu22
  Architecture: amd64
  CasperVersion: 1.442
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 24 02:01:51 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed only-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
  ProcEnviron:
   LANGUAGE=sv_SE.UTF-8
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=sv_SE.UTF-8
   LC_NUMERIC=C.UTF-8
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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