Checksum fails on install to USB-stick

[private_lock]

I used USB-Creator, to install an ISO onto my USB-pen-drive:

http://cdimage.ubuntu.com/kubuntu/releases/14.04.3/release/kubuntu-14.04.3-desktop-amd64.iso
SHA256 44cc15a31f9a3a6b583929ce711a5eb76fddb1ba447726f9bb2539d78b7a53bc

After booting from the drive, I ran the internal sanity check on boot from the GRUB-menu, resulting in two files failing.

So I found file md5sum.txt in the root-directory of the device and checked:

f05f09712e02752e371b1e5542f48fec grub.cfg
3f3de40dda154fb20c3f43d20e27d1f0 grub.cfg~
4a38e0138d9e1bf6eda073cb08e7d549 loopback.cfg
fbf91ea5dab2df948318aeb3f4278436 loopback.cfg~

Where the files with ~ are wrong, before replacing them with their correct copies manually extracted from the ISO.

lsb_release -rd
Description: Ubuntu 15.04
Release: 15.04

apt-cache policy usb-creator-kde
usb-creator-kde:
  Installiert: 0.2.67ubuntu0.1
  Installationskandidat: 0.2.67ubuntu0.1
  Versionstabelle:
 *** 0.2.67ubuntu0.1 0
        500 http://de.archive.ubuntu.com/ubuntu/ vivid-updates/universe amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ vivid-security/universe amd64 Packages
        100 /var/lib/dpkg/status
     0.2.67 0
        500 http://de.archive.ubuntu.com/ubuntu/ vivid/universe amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: usb-creator-kde 0.2.67ubuntu0.1
ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4
Uname: Linux 3.19.0-26-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.3
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Sep 6 10:52:03 2015
ExecutablePath: /usr/bin/usb-creator-kde
InstallationDate: Installed on 2014-04-12 (512 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326.2)
InterpreterPath: /usr/bin/python3.4
SourcePackage: usb-creator
UDisksDump: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: 'udisks'
UpgradeStatus: Upgraded to vivid on 2015-05-04 (125 days ago)

[Mathieu Trudel-Lapierre (cyphermox)]

This is unfortunate but currently an expected side-effect of installing with usb-creator, especially if you enable the persistence option: we need to update grub.cfg and loopback.cfg accordingly so that it will be enabled and usable.

Perhaps there may be a way to also mangle the sums file to follow the changes, or removing them from the sums completely.