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GRUB Error: Invalid Or Unsupported Executable Format
Posted: Sun Jan 17, 2010 8:49 pm
by Nathan
Hello,
I've followed all the of
this tutorial, the only thing that I've changed was before the
ld linking, I've used
objcopy to correct a PE error when using
ld, but I've used
objcopy like this:
Code: Select all
objcopy -I pe-i386 -O binary kernel.o kernel.bin
But when all was ok, GRUB booted and shown that menu to choose, as there was only one choice(myOS) I've selected and pressed enter, the I got this:
Why I'm getting this? There is something I can do?
Best Regards,
Nathan Paulino Campos
Re: GRUB Error: Invalid Or Unsupported Executable Format
Posted: Sun Jan 17, 2010 9:09 pm
by thepowersgang
Ok, I would suggest running mbcheck on the binary to validate the multiboot header.
Make sure that the header is within the first 8196 bytes of the kernel. (Usually just linking the file with it first works)
Re: GRUB Error: Invalid Or Unsupported Executable Format
Posted: Mon Jan 18, 2010 1:54 am
by gedd
Nathan wrote: ... the only thing that I've changed was before the ld linking, I've used objcopy to correct a PE error when using ld, ...
You change executable format to PE too.
What was the error ? Can't use LD script with PE format or something like that ?
Even if use objcopy to produce a PE file after having produced a ELF with specific section with LD script, your specific section will not been reproduced in the PE file.
So goodby Multiboot header and welcome unsuported executable format.
Be carefull, most people on this forums are allergic on PE format !
Re: GRUB Error: Invalid Or Unsupported Executable Format
Posted: Mon Jan 18, 2010 2:22 am
by Combuster
I suggest you
read properly before complaining. The mere fact that get messages about PE means that you didn't.