[syslinux] isohybrid and partition type 0x17

Andres Salomon dilinger at queued.net
Mon Apr 15 20:31:59 PDT 2013


Hi,

OLPC's Openfirmware (OFW) implementation chokes when attempting to boot
an iso created by isohybrid.  The problem is that OFW's ISO-9660
support expects a partition type of 0x96 (CHRP ISO-9660, according to
http://en.wikipedia.org/wiki/Partition_type).  I see from
http://git.kernel.org/cgit/boot/syslinux/syslinux.git/commit/utils/isohybrid.in?id=aee4e8fa73571eaca80ad43aa007523cde5d4567
that the partition type was originally 0x83 (Linux), and was changed to
0x17 (hidden IFS) to satisfy windows.

I'm wondering what's the correct partition type to actually use.  Does
windows balk if 0x96 is used?  Should OFW be using 0x17, or should
isohybrid (and debian-installer) be using 0x96 for a partition table
containing an ISO-9660 filesystem?


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