Post by Rick Thomas
I notice that the webpage at
mentions a mac image as if it *should* be there, but it's not in the list of
As that text says, the "mac" ISOs do/did not contain anything extra
but rather lack/lacked of UEFI boot entry points and of any UEFI boot
Some MAC firmwares are said to take offense from UEFI bootable ISOs.
Simply try whether yours is among them.
If any mentioning of "Debian" appears, then your machine needs no "mac" ISO.
If the Mac does not recognize the medium with the Debian "firmware" ISO,
then you could try whether
at least gets to some "Debian" screen.
If so, then next step would to convert
into a "mac" variant.
The UEFI boot entry points of Debian amd64 ISOs are:
- For USB stick a partition of type 0xef in an MBR partition table
The partition table entry can be deleted on USB stick by a partition
(Unless the partition editor problems of Jon Magee appear ...)
- For CD/DVD an El Torito catalog entry.
We could try questionable surgery on byte level, or you could repack
the ISO according to the example in
but with the mount point of firmware-10.3.0-amd64-netinst.iso as content
of variable new_files:
sudo mkdir /mnt/iso
sudo mount "$orig_iso" /mnt/iso
and without the xorriso options which create the UEFI boot entry points:
-e boot/grub/efi.img \
-no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
Have a nice day :)