mkbiarch man page — make a multiple architecture Live boot disk image for USB, CF SSD or any disk from 2 architecturally different  LiveCD ISO9660 image files.


mkbiarch <LiveCDx86ISO>  <LiveCDx64ISO>  <MultipleArch Disk IMG File>


mkbiarch(8) create a multiple architecture, bootable Live Disk image file (IMG) for use on USB or any disk (CF, SSD)  from 2 LiveCD ISO9660 files of different architecture (ISO).

Usage Fedora-13-i686-Live.iso Fedora-13-x86_64-Live.iso Fedora-13-MultiArch.img

Then to write it  /bin/dd if=Fedora-13-MultiArch.img of=/dev/sdb bs=4M

In the above example, creates Fedora-Multi-arch.img from the two existing ISO9660 LiveCD image files.  The resulting image file,  is written to a raw disk device using dd(1)

Under the Hood first checks that the two ISO9660 image files exist. It will create a blank file using dd(1) writing data from /dev/zero, the size of the two ISO9660 images files combined. The blank file is then bound via loopback using losetup(8) partitioned, and bound at an offset via loopback of 512 bytes, this second loopback device is formatted type ext3 using mke2fs(8) This filesystem is mounted using mount(8) on a temporary directory. The two ISO9660 files are then mounted via loopback,  files are copied using shutil module in Python, from them to the newly formatted  filesystem in the image file. Data is gathered from the ISO9660 image files from it's isolinux.cfg, after the files are copied the loopbacked ISO9660 image files are released. extlinux(1) is installed to the loopback mounted filesystem on the target image file and an extlinux.conf is written. The temporary directories are unmounted using umount(8) and the looback devices are released.  The temporary directories are then removed, and the resulting Multiple Architecture Disk Image File is moved using shutil to the specified location on the command line, which is provided as  argument 3 to


Please report any bugs to  under component livecd-tools


To check out the git version of this program
git clone


Jasper Hartline <>


Richard Shaw <> pyparted suggestions and feedback

Jan Kratochvil <> for the original bash script which  the python version was derived

See Also

livecd-creator(8), livecd-iso-to-disk(8), mke2fs(8), losetup(8), dd(1), exlinux(1)


2010-8-24 LiveCD Tools User Manuals