[syslinux] xorriso or genisoimage syntax assistance

[Dean Graff]

Mattias, thank you, I am sifting through this wealth of a distribution you
have created. And thank you for the attached articles on PXE booting.

This site "http://libburnia-project.org/wiki/PartitionOffset" helped me
understand things more clearly. thanks Thomas. Just to clear things up so I
am not presenting `xorriso' or `syslinux' incorrectly. Here it goes:

# Use `xorriso' with `isolinux' to make a "binary-hybrid.iso".

# Create a directory containing syslinux libraries.
rsync -a /usr/lib/syslinux ISO_root

# Create the configuration file "isolinux.cfg".
cat > ISO_root/syslinux/isolinux.cfg <<EOF
UI menu.c32
LABEL isolinuxtests
EOF

# Xorriso uses the library `libisofs', and can produce iso9660
# which have a rather conventional partition table if copied
# onto a USB.

# The option "-partition_offset 16" in `xorrisofs' helps
# facilitate a peculiarity in GNU `parted' and is not required.
xorrisofs -r -J    \
-o output.iso            \
-no-emul-boot            \
-boot-info-table         \
-boot-load-size 4        \
-c syslinux/boot.cat     \
-b syslinux/isolinux.bin \
-partition_offset 16     \
-isohybrid-mbr ISO_root/syslinux/isohdpfx.bin \
ISO_root

# Put the .iso on a USB so it can be tested.
dd if=output.iso of=/dev/sdX

# Test boot the USB.
kvm /dev/sdX

# Make other partitions on the USB. (optional)
parted /dev/sdX mkpart primary 50%  75% -m -s
parted /dev/sdX mkpart primary 75% 100% -m -s

I sincerely thank all you for the technical support here, -dean





On Mon, Feb 3, 2014 at 10:04 AM, Thomas Schmitt <scdbackup at gmx.net> wrote:

> Hi,
>
> > If any of you have time, let me know if it
> > looks wrong or if I missed anything anyone suggested.
>
> Nitpicking:
>
> Consider whether to use -r instead of -R, i.e. whether to
> make up ownership and permissions for publishing, or whether
> to preserve the ownership and permission as in ISO_root.
> The latter (-R) is more suitable for backup purposes, or if
> you have reason to have multiple owners and/or finely
> structured access permissions.
>
> Mention that virtual machines can test the .iso file as
> virtual CD-ROM, and that it can be burnt onto CD/DVD/BD
> so that BIOS boots it from such media.
>
>
> > # Xorrisos special .iso allows other partitions to be made:
>
> I would prefer a statement that -partition_offset 16
> creates a partition table which parted is willing to edit.
>
> Indeed, the emerging .iso is quite special:
>   http://libburnia-project.org/wiki/PartitionOffset
> But the refusal of parted with less special images is probably
> not to expect from all other partition editors.
>
>
> Have a nice day :)
>
> Thomas
>
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