c4bbb6f3bc
We currently do not have the ability to create a docs site which outlines all the elements. Change-Id: I77ccf61e0c4b1509b3e7ce9b8f15ea5ccfd50d9b
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1.6 KiB
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42 lines
1.6 KiB
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===
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iso
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===
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Generates a bootable ISO image from the kernel/ramdisk generated by the
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elements ``baremetal`` or ``ramdisk``. It uses isolinux to boot on BIOS
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machines and grub to boot on EFI machines.
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This element has been tested on the following distro(s):
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* ubuntu
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* fedora
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**NOTE**: For other distros, please make sure the ``isolinux.bin`` file
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exists at ``/usr/lib/syslinux/isolinux.bin``.
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baremetal element
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-----------------
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When used with ``baremetal`` element, this generates a bootable ISO image
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named ``<image-name>-boot.iso`` booting the generated kernel and ramdisk.
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It also automatically appends kernel command-line argument
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'root=UUID=<uuid-of-the-root-partition>'. Any more kernel command-line
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arguments required may be provided by specifying them in
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``DIB_BOOT_ISO_KERNEL_CMDLINE_ARGS``.
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**NOTE**: It uses pre-built efiboot.img by default to work for UEFI machines.
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This is because of a bug in latest version of grub[1]. The user may choose
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to avoid using pre-built binary and build efiboot.img on their own machine
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by setting the environment variable DIB\_UEFI\_ISO\_BUILD\_EFIBOOT to 1 (this
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might work only on certain versions of grub). The current efiboot.img was
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generated by the method build\_efiboot\_img() in 100-build-iso on
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Ubuntu 13.10 with grub 2.00-19ubuntu2.1.
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ramdisk element
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---------------
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When used with ``ramdisk`` element, this generates a bootable ISO image
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named ``<image-name>.iso`` booting the generated kernel and ramdisk. It also
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automatically appends kernel command-line argument 'boot\_method=vmedia'
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which is required for Ironic drivers ``iscsi_ilo``.
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**REFERENCES**
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[1] https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1378658
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