User:Pjones/MacCDsForEFI

Bootable EFI CDs on Intel Macs

Bootable EFI CDs on an Intel Mac are a bit different than a normal EFI CD. As such, they need special support.

HFS+ support for blessing a file
make dumpet correctly interpet and display hybrid iso/apm CDs and HFS+ blessing
Ability to create image files for the icon and label to be used on the boot option screen
Ability to create CD that has el torito images as well as an Apple Partition Map which specifies the HFS+ image as a partition.
icon/label images included in *-logos
modification of mk-images to create the appropriate HFS+ image and add it to CD images.

Sub-task	Percent Complete	Notes
HFS+ bless	100	Apparently we can do this now. Two bytes in the HFS+ superblock need to be set to point to the inode of the appropriate file, which can be determined with ls -i. Code written (http://www.codon.org.uk/~mjg59/bless.c)
icons	0	We know how to create them. generic-logos has a sample implementation and builds the Mac icon (/usr/share/pixmaps/bootloader/fedora.icns) and this should be installed as .VolumeIcon.icns
dumpet modification	30	pjones working on this - progress info at http://git.fedorahosted.org/git/?p=dumpet.git
create hybrid APM CDs	0	pjones working on this - plan is to make mkisofs use libapplepart provided by dumpet
*-logos	0
mk-images	0	blocking on stuff above
isohybrid integration	0	the plan for this is insane - basically, it's to pick a creative value which decodes to benign x86 insns for the volume size in the apple partition map, and stick a jmp into the next field, then stick the actual isohybrid code a bit later where we've got some space.

There's also another way:

Put a GPT table on the CD
Create an EFI System Partition that points at the El Torito image
copy /usr/share/pixmaps/bootloader/fedora.icns to \.VolumeIcon.icns
Put a label file at \{somefile}
Make sure the bootloader looks at the iso9660 image instead of El Torito or the EFI System Partition.