[CentOS] Re: Custom ISO

Wed May 6 06:52:39 UTC 2020
Yamaban <foerster at lisas.de>

On Tue, 5 May 2020 22:40, Jerry Geis wrote:
> Hi All,
> I am trying to make a customer ISO. When I run this command:
> mkisofs -o $DESTINATION_FILE -b isolinux/isolinux.bin -c boot.cat \
>        -no-emul-boot -boot-info-table \
>        -V "$NAME" -boot-load-size 4 -boot-info-table -R -J -v -T \
>        -eltorito-alt-boot -e images/efiboot.img \
> it tells me:
> Size of boot image is 4 sectors -> No emulation
> Size of boot image is 17408 sectors -> genisoimage: Error - boot image
> 'images/efiboot.img' has not an allowable size.
> This is the exact same file that is on the Everything ISO image.
> What am I missing ?  I also want to make the ISO boot with UEFI. I think I
> have the right parameters but getting this error. Thoughts?

Only one thing jumps out to me (no expert at all):
  Your parameter at call:
   -boot-load-size 4
  Collides with the boot image size of 17408 sectors of
  the images/efiboot.img file

I would recommend to try with:
  -boot-load-size 17408
  (or even greater)

Have a good day,
  - Yamaban