grub-update generates a wrong grub.cfg for cryptsetup

I had some problems when running boot-repair from a xubuntu live cd (xubuntu 12.04 desktop live cd and xubuntu 12.04 with luks / on hdd).

I think it has more to do with grub-update running from chrooted livecd (and default cryptsetup mappings on the live cd) than boot-repair itself, for my cryptsetup root partition it generated something like:

        linux /vmlinuz-3.2.0-60-generic root=/dev/mapper/uuid-12312abcd*blablabla* ro quiet splash $vt_handoff
        initrd /initrd.img-3.2.0-60-generic

instead of
Code:

        linux /vmlinuz-3.2.0-60-generic root=/dev/mapper/sda5_crypt ro quiet splash $vt_handoff
        initrd /initrd.img-3.2.0-60-generic

initramfs maps the cryptsetup partitions as sdXY_crypt, not as uuid disks. After I figured it out the fix was trivial, I don't know if you can automate it reliably in any way.

Thanks for making this tool!