Linux Bootable UDF

Lennart Sorensen lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org
Tue Jan 17 15:51:45 UTC 2012


On Tue, Jan 17, 2012 at 04:34:46AM -0700, S P Arif Sahari Wibowo wrote:
> Do you know how to make a writable (packet writing) UDF media (such
> as UDF-formatted USB flash drive or DVD+RW formatted for packet
> writing) bootable under Linux?
> 
> I did some Google search but cannot find anything into that
> direction. Grub 2 said it support UDF, but refuse to install on an
> UDF media (grub2-install failed with error).

CD/DVD drives typically use el torito boot.  I don't know how that would
integrate with a UDF media.  It certainly would not be easily changeable.

USB flash drives boot like a harddisk in most cases, which is totally
different.

grub2 probably supports reading UDF and booting kernels found on UDF.
That doesn't mean it can embed in UDF (there probably isn't anywhere to
embed in UDF).

One option would be to generate a grub image with a config that tells
it to load a different config from UDF.  Then if possible embed that
image as the boot code when creating the UDF file system.  ISO supports
doing this.  UDF might.  I quick search reveals UDF can not be bootable.
Bootable UDF DVDs actually also have a fake ISO embedded at the start
to contain the boot code.

-- 
Len Sorensen
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