В Wed, 20 Mar 2013 10:34:46 +0100 "Arbiel (gmx)" <[email protected]> пишет:
> Hi > > I try to record in the MBR of USB keys an autonomous MBR (no support of > any other directory or file) to boot a PC with the system located on a > partition whose name is predefined "cielos", and in case this fails, to > chainload to the hd0's MBR. > > I've understood from Grub's Manual that to achieve such a goal, I have > to embed the file using option -c of grub-mkimage. > > I have now modified the --grub-mkimage option to point to the shell > script which creates /media/maisonnette/grub/core.img and from there I > have been able to imbed the file and launch a boot process. However, > this process failed, with a "no such device : the uuid I used in my > search.fs_uuid command" whereas such a device exists on my external device > You need to include much more of grub modules than you did. At least you need disk driver and filesystem driver to read UUID. grub-install creates exactly the same embedded config. Why do not you simply use it? > The imbedded file reads > > search.fs_uuid 0aceef09-a694-4105-bade-2dca95a09a08 root > set prefix=(root)/boot/grub > > and a sudo blkid | grep 0aceef09-a694-4105-bade-2dca95a09a08 responds > > /dev/sdb5: LABEL="cielos" UUID="0aceef09-a694-4105-bade-2dca95a09a08" > TYPE="ext4" > > I try to understand why the search fails. > > Le 20/03/2013 04:18, Andrey Borzenkov a écrit : > > В Wed, 20 Mar 2013 00:15:07 +0100 > > "Arbiel (gmx)" <[email protected]> пишет: > > > >> Hi > >> > >> I'm trying to embed a file into core.img. I followed instructions from > >> GNU Grub Manual's 5.4 Embedding a configuration file into Grub and tried > >> to replicate the example given there with a config file figuring two lines > >> > >> search.fs_uuid the_uuid_of_my_partition root > >> set prefix=($root)/boot/grub > >> > >> > >> I used the following commands > >> > >> #! /bin/bash > >> cd "${1}" > >> cat 1> grub/embed.cfg <<EOF > >> search.fs_uuid 0aceef09-a694-4105-bade-2dca95a09a08 root > >> set prefix=($root)/boot/grub > >> EOF > >> sudo grub-mkimage -c 'grub/embed.cfg' -o 'grub/grub-image' -O i386-pc -d > >> '/usr/lib/grub/i386-pc' -C none search_fs_uuid > > > > -O and -d together are redundant. > > > >> sudo chmod +x 'grub/grub-image' > >> sudo grub-install --boot-directory=/media/maisonnette > >> --grub-mkimage=grub/grub-image /dev/sdb 2>grub/msg.log > >> > > > > --grub-mkimage points to program to create image, not to image itself. > > > > You do not explain what you attempt to achieve. May be using grub-rescue > > to build ISO image that includes full grub and can optionally include > > arbitrary files would be easier? > > > >> I get the following error message > >> > >> grub/grub-image: 1: grub/grub-image: Syntax error: word unexpected > >> (expecting ")") > >> > >> Can anybody tell me what's wrong, knowing that my partition > >> /media/maisonnette has nothing to do with the > >> 0aceef09-a694-4105-bade-2dca95a09a08 partition. > >> > >> Thank you > >> > >> I used the following command > >> > >> > >> > >> > >> > >> _______________________________________________ > >> Help-grub mailing list > >> [email protected] > >> https://lists.gnu.org/mailman/listinfo/help-grub > > _______________________________________________ Help-grub mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-grub
