#584 Issue closed: mbr.bin is not in ISOLINUX (ubuntu 15.04)¶

Labels: enhancement, fixed / solved / done

(unknown) opened issue at 2015-05-05 12:58:¶

In order to use rear in ubuntu 15.04, you must symlink mbr.bin file from /usr/lib/SYSLINUX/ to /usr/lib/ISOLINUX/ (sudo ln -s /usr/lib/SYSLINUX/mbr.bin /usr/lib/ISOLINUX/).

It is possible to change the rear corresponding script?

schlomo commented at 2015-05-05 15:27:¶

I did some checking.

$ lsb_release -ds ; dpkg -S /usr/lib/*/mbr.bin /usr/lib/*/mbr/mbr.bin
Ubuntu 14.04.2 LTS
syslinux-legacy: /usr/lib/syslinux-legacy/mbr.bin
syslinux-common: /usr/lib/syslinux/mbr.bin
dpkg-query: no path found matching pattern /usr/lib/*/mbr/mbr.bin

$ lsb_release -ds ; dpkg -S /usr/lib/*/mbr.bin /usr/lib/*/mbr/mbr.bin 
Ubuntu 15.04
syslinux: /usr/lib/SYSLINUX/mbr.bin
syslinux-common: /usr/lib/syslinux/mbr/mbr.bin

The code looking for mbr.bin looks in $SYSLINUX_DIR which is set in https://github.com/rear/rear/blob/master/usr/share/rear/lib/bootloader-functions.sh#L48 like this:

    if [[ -z "$SYSLINUX_DIR" ]]; then
        for file in /usr/{share,lib,libexec}/*/isolinux.bin ; do
            if [[ -s "$file" ]]; then
                SYSLINUX_DIR="$(dirname $file)"
                break # for loop
            fi
        done
    fi

I think the problem is that in 15.04 the mbr.bin file is now not any more found in the same location as isolinux.bin.

The ideal solution would somewhat reorganize the way how we find the various syslinux files and make the searches independant from each other.

I would suggest to create a new function called find_syslinux_file that returns the full path to a file given as argument and that searches for that file in "typical" syslinux paths.

gdha commented at 2015-05-06 13:48:¶

@schlomo no problem - seems a good idea as such we can mask the complexity per OS distro.

gdha commented at 2015-05-31 15:19:¶

@sorintelecom your feedback is welcome if you try the latest version from github http://download.opensuse.org/repositories/Archiving:/Backup:/Rear:/Snapshot/xUbuntu_15.04/all/

gdha commented at 2015-06-30 10:28:¶

I think this is OK in the meantime, but did not received conclusive feedback yet

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[Export of Github issue for rear/rear.]