[Bug 1622313] Re: gparted does not recognize the iso9660 file system in cloned Ubuntu USB boot drives

[sudodus]

No, gparted does not work in this case (but in most other cases gparted
is a good tool).

But you can mount the partition with the iso9660 file system manually,
and after that you can look at it with a file manager, or as illustrated
below, with command line tools. For example, I can read the file
README.diskdefines in the iso9660 file system. Try it :-)

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sudodus at xenial32 ~ $ sudo lsblk -f /dev/sdd
[sudo] password for sudodus: 
NAME   FSTYPE  LABEL                    UUID                                 MOUNTPOINT
sdd    iso9660 Lubuntu 16.04.1 LTS i386 2016-09-09-18-15-41-00               
└─sdd1 iso9660 Lubuntu 16.04.1 LTS i386 2016-09-09-18-15-41-00               
sudodus at xenial32 ~ $ sudo lsblk -m /dev/sdd
NAME    SIZE OWNER GROUP MODE
sdd     3,7G root  disk  brw-rw----
└─sdd1  859M root  disk  brw-rw----
sudodus at xenial32 ~ $ sudo mount /dev/sdd1 /mnt
mount: /dev/sdd1 is write-protected, mounting read-only
sudodus at xenial32 ~ $ ls -l /mnt
totalt 36
dr-xr-xr-x 1 root root  2048 sep  9 20:15 boot
dr-xr-xr-x 1 root root  2048 sep  9 20:15 casper
dr-xr-xr-x 1 root root  2048 sep  9 20:15 dists
dr-xr-xr-x 1 root root  2048 sep  9 20:15 install
dr-xr-xr-x 1 root root 18432 sep  9 20:15 isolinux
-r--r--r-- 1 root root  3114 sep  9 20:15 md5sum.txt
dr-xr-xr-x 1 root root  2048 sep  9 20:15 pics
dr-xr-xr-x 1 root root  2048 sep  9 20:15 pool
dr-xr-xr-x 1 root root  2048 sep  9 20:15 preseed
-r--r--r-- 1 root root   227 sep  9 20:15 README.diskdefines
lr-xr-xr-x 1 root root     1 sep  9 20:15 ubuntu -> .
sudodus at xenial32 ~ $ cat /mnt/README.diskdefines 
#define DISKNAME  Lubuntu 16.04.1 LTS "Xenial Xerus" - Beta i386
#define TYPE  binary
#define TYPEbinary  1
#define ARCH  i386
#define ARCHi386  1
#define DISKNUM  1
#define DISKNUM1  1
#define TOTALNUM  0
#define TOTALNUM0  1
sudodus at xenial32 ~ $ 
-----

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https://bugs.launchpad.net/bugs/1622313

Title:
  gparted does not recognize the iso9660 file system in cloned Ubuntu
  USB boot drives

Status in GParted:
  Unknown
Status in gparted package in Ubuntu:
  Triaged

Bug description:
  I am testing in a live system and looking at the very drive, from
  which it is booted, the current daily iso file of Lubuntu Xenial i386
  (post 16.04.1 LTS). The problem is that the file system cannot be
  identified, and several end users may (and will) think that the USB
  boot drive is damaged. But it works, it is cloned, which is the
  straightforward method to create a boot drive from a hybrid iso file.

  this issue was worse in previous versions, where gparted would
  complain about an error; now it is at least seeing the partition. The
  next step is that it can see the file system too.

  lsblk can see it, as illustrated by the following command line (in a
  wide terminal window),

  sudo lsblk -fm

  The attached screenshot illustrates the problem, and shows that it
  affects the text mode program parted too.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: gparted 0.25.0-1
  ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
  Uname: Linux 4.4.0-38-generic i686
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: i386
  CasperVersion: 1.376
  CurrentDesktop: LXDE
  Date: Sun Sep 11 10:10:21 2016
  LiveMediaBuild: Lubuntu 16.04.1 LTS "Xenial Xerus" - Beta i386 (20160909)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: gparted
  UpgradeStatus: No upgrade log present (probably fresh install)

  Edit:

  After some testing I found that the current i386 versions behave in a
  similar way as Xenial.

  But the current amd64 (64-bit) versions are more severely affected by
  this bug. It is much worse in Trusty, but also bad in Xenial as
  illustrated by screenshots in comments #6 and #7. This behaviour will
  really confuse new users of Ubuntu and the Ubuntu flavours.

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