Hybrid iso image won't mount

[mrw]

Hybrid ISO CD-ROM devices do not appear in the list of (USB-) media neither on Ubuntu nor on Kubuntu. The ISO can therefore not be mounted by the desktopp user, but only by root on the command line.

All the details are described in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/510042

I don't understand, why that bug report has been closed without fixing the problem?!?

There is a note to open a new bug report, well, here I open a new bug report for the same problemn, as required by Brad Figg (brad-figg).

My ISO also contains HFS+Joliet+RockRidge (exactly as in the ticket mentioned before) and is created the same way as specified there for the same reason, we supported Linux/Mac/Windows, but for two years, we no longer support Linux only because of this annoying bug!

[mrw (marc-waeckerlin)]

That's what fails if the ISO is HFS/RockRidge/Joliet hybrid: https://help.ubuntu.com/community/Mount/USB

[Philipp Hug (philipphug)]

to reproduce, run the following:
mkdir isotest
cd isotest
touch all
touch windows
touch linux
touch osx
cd ..
echo osx > osx-exclude
echo windows > windows-exclude
echo linux > linux-exclude
genisoimage -joliet -hfs -rational-rock -hide-list windows-exclude -hide-list osx-exclude -hide-joliet-list osx-exclude -hide-joliet-list linux-exclude -hide-hfs-list windows-exclude -hide-hfs-list linux-exclude -output isotest.iso isotest
wodim isotest.iso

[Philipp Hug (philipphug)]

The reason for this bug is the MBR signature (55AA) which is added by genisoimage.
If this signature is removed from the iso manually, it works as it should.

[Philipp Hug (philipphug)]

Generated ISO

[Philipp Hug (philipphug)]

Generated ISO with manually removed MBR signature

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/971487/+editstatus and add the package name in the text box next to the word Package.

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