Thomas Schmitt wrote: > Hi, > > >> Ok, legacy :(. But --efi-boot would have no legacy. >> > > --efi-boot will be all at your service. :)) > The more definite your wishes, the more swift > their implementation. > > Maybe we should call it --efi-grub-boot just > to make clear whom it cares for ? > > Right now it has nothing grub-specific. However I don't care much about the exact name. Feel free to use whatever you want and I'll make the adjustments in grub-mkrescue > Shall the --efi* option have any influence on > the BIOS boot stuff except the boot catalog ? > (Default Entry, BIOS boot image, ...) > > No > xorriso-0.5.3 timestamp 2010.04.18.100814 > allows to set LBA sorting weights. > Within the mkisofs emulation it is: > > --sort-weight number ISO-path > > If ISO-path is a directory, then its whole tree > is affected. --sort-weight can get overridden by > further --sort-weight options. They get applied > after all files are added to the image. > > The boot catalog already has a hardcoded weight > of 1000 in libisofs. It cannot be influenced by > --sort-weight because it gets created after the > image manipulations are done. > The boot catalog of grub-mkrescue has no ISO-path > anyway (no option -c). > > So in grub-mkrescue , this would give all files > weight 0, then override the /boot/grub tree by 1, > and the -b file by 2: > > --sort-weight 0 / \ > --sort-weight 1 /boot/grub \ > --sort-weight 2 /boot/grub/i386-pc/eltorito.img \ > > Thanks for the information. I'll look into it. > After the image is written, xorriso can display > the data LBAs of regular files: > > xorriso \ > -indev image.iso \ > -find / -sort_lba -exec report_lba -- \ > 2>/dev/null | less > > yields: > Report layout: xt , Startlba , Blocks , Filesize , ISO image path > File data lba: 0 , 38 , 12 , 24317 , > '/boot/grub/i386-pc/eltorito.img' > File data lba: 0 , 50 , 6 , 10564 , > '/boot/grub/i386-pc/acpi.mod' > ... > > For the boot catalog LBA, one has to peek binary > (even if there was a ISO-path leading to it). > This reads the LBA word from El Torito record: > > dd if=image.iso bs=1 skip=34887 count=4 \ > 2>/dev/null | od -x > > yields LBA 37 (decimal) > 0000000 0025 0000 > > > (There is a mkisofs option -sort with a file as > argument where single files get a weight. > Wildcards are promised in mkisofs/README.sort. > For now i deem that rather unappealing.) > > ------------------------------------------------ > > > I will now finish multi-session MBR handling and > release libisoburn-0.5.4. > Then begins the next development cycle with EFI, > adjustable boot catalog weight, ... > > > Have a nice day :) > > Thomas > > > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > http://lists.gnu.org/mailman/listinfo/grub-devel > >
-- Regards Vladimir 'φ-coder/phcoder' Serbinenko
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
