[Bug 1290789] New: Preparing Boot Media instructions result in The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes.

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1290789

            Bug ID: 1290789
           Summary: Preparing Boot Media instructions result in The driver
                    descriptor says the physical block size is 2048 bytes,
                    but Linux says it is 512 bytes.
           Product: Fedora Documentation
           Version: devel
         Component: install-guide
          Severity: medium
          Assignee: pbokoc(a)redhat.com
          Reporter: pcfe(a)redhat.com
        QA Contact: docs-qa(a)lists.fedoraproject.org
                CC: pbokoc(a)redhat.com, zach(a)oglesby.co



Description of problem:
Following the instructions of
https://docs.fedoraproject.org/en-US/Fedora/23/html/Installation_Guide/se...
results in a USB stick where the remaining space is not usable.

Version-Release number of selected component (if applicable):
Installing Fedora 23 on 32 and 64-bit AMD and Intel
Edition 1

How reproducible:
always

Steps to Reproduce:
1. read the F23 Preparing Boot Media instructions
2. dd if=Fedora-Live-Security-x86_64-23-10.iso of=/dev/sdl
3. unplug and re-plug drive
4. gnome-disks
5. (within gnome-disks UI) unmount any partition of /dev/sdl that may have been
mounted by the desktop environment
6. try to use the remaining space (31GB in my case) by creating a slice
(luks+ext4 in this case)

Actual results:
Warning: The driver descriptor says the physical block size is 2048 bytes, but
Linux says it is 512 bytes.


Expected results:
Install instructions result in a LIVE USB image that is bootable on BIOS and
UEFI
and remaining space of USB disk can be reclaimed.

Additional info:
Same result if, instead of dd, I use gnome-disks' Restore Disk Image option.

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[Bug 1290789] "Preparing Boot Media" instructions result in "The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes."

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1290789

Pete Travis <me(a)petetravis.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |me(a)petetravis.com,
                   |                            |pcfe(a)redhat.com
           Assignee|pbokoc(a)redhat.com           |me(a)petetravis.com
              Flags|                            |needinfo?(pcfe(a)redhat.com)



--- Comment #1 from Pete Travis <me(a)petetravis.com&gt; ---
The Fedora installation media targets the best possible compatibility across
supported systems, and by nature, it contains a partition table.  Reusing the
extra space, with correct geometry, is not a use case where consuming the
unmodified image makes sense. 

The media creation method that's both close to what you're trying to do and
supported would be the Fedora LiveUSB Creator's persistent overlay mode
(although I don't recall if it supports LUKS, and it isn't currently covered in
the installation guide)

As far as I know, this warning is harmless; Linux can pretend there are 512b
sectors and that will divide nicely into 2048b sectors.  Unless you'd like to
contribute instructions for adding a partition to media created by the image,
I'll consider this a harmless but annoying side effect of an undocumented
procedure, or perhaps a minor flaw in the image compose process.

Can you please clarify your concern?

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[Bug 1290789] "Preparing Boot Media" instructions result in "The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes."

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1290789

Patrick C. F. Ernzer <pcfe(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |CLOSED
         Resolution|---                         |WONTFIX
              Flags|needinfo?(pcfe(a)redhat.com)  |
        Last Closed|                            |2016-02-11 12:21:07



--- Comment #2 from Patrick C. F. Ernzer <pcfe(a)redhat.com&gt; ---
's OK to close this if that's not a use case that makes sense.

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