On 05/10/2021 09:38, Dean Westhead wrote:
I may be missing something, but since the commit changed the file
src/util/geniso to src/util/genfsimg, I have not been able to generate
an ISO file that can be used to boot both BIOS and UEFI ... it always
only boots BIOS.
I admit that the changes that i was told to make to the geniso file, i
cant make to genfsimg becasue it is very different and i dont want to
break anything else in it !
Am I doing something wrong or is there a different set of instructions
to modify genfsimg to make it create this ISO correctly ?
You no longer need to make any modifications to genfsimg: it is already
capable of building a combined BIOS and UEFI ISO (and can also handle
multiple UEFI architectures, if you want e.g. a combined ISO that can
handle BIOS, x86_64 UEFI, and AArch64 UEFI).
As per "./util/genfsimg -h":
usage: ./util/genfsimg [OPTIONS] foo.lkrn|foo.efi [bar.lkrn|bar.efi,...]
where OPTIONS are:
-h show this help
-o FILE save image to file
-p PAD pad filesystem (in kB)
-s SCRIPT use executable script
so you can build a combined image in two stages using e.g.
make bin/ipxe.lkrn bin-x86_64-efi/ipxe.efi
./util/genfsimg -o combined.iso \
bin/ipxe.lkrn bin-x86_64-efi/ipxe.efi
You can also use the "-s" option to specify a script that will be used
by platforms (without needing to build using EMBED=...). This is
particularly useful if you build an editable FAT filesystem image
instead of an ISO, using e.g.
./util/genfsimg -o combined.img -s myscript.ipxe \
bin/ipxe.lkrn bin-x86_64-efi/ipxe.efi
since you can then mount the FAT filesystem image and edit the script
(saved as "autoexec.ipxe") without needing to recompile.
Michael
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