Repository : http://git.fedorahosted.org/cgit/docs/multiboot-guide.git On branch : f23 commit c465d084962b93ebaf6a0d5be8db0761d9e3124d Author: Pete Travis <immanetize(a)fedoraproject.org&gt; Date: Tue May 24 20:23:16 2016 -0500 add some instructions for reinstalling grub on bios en-US/GRUB-reinstalling.xml | 32 +++++++++++++++++++++++++++++++- 1 files changed, 31 insertions(+), 1 deletions(-) diff --git a/en-US/GRUB-reinstalling.xml b/en-US/GRUB-reinstalling.xml index 582e2d3..fe4a633 100644 --- a/en-US/GRUB-reinstalling.xml +++ b/en-US/GRUB-reinstalling.xml @@ -128,7 +128,37 @@ </section> <section id="GRUB-reinstalling-BIOS"> <title>Reinstalling GRUB on BIOS systems.</title> - <para /> + <para> + On legacy systems, GRUB installs a small bootloader into the master boot record of a drive. When the system boots, the firware attempts to boot from the MBR of each drive in the boot order list. Restore grub by reinstalling the package to populate <filename class="directory">/boot</filename>, if required, then install GRUB to the drive. + </para> + <procedure> + <title>Reinstalling GRUB on BIOS systems.</title> + <step> + <para> + Enter your installed system in a chroot using the instructions in <xref linkend="common-chroot_from_live" />. Be sure to boot the live image in legacy mode, if you have a UEFI capable system but are working with a non-UEFI installaiton. + </para> + </step> + <step> + <para> + Reinstall the packages that provide bootloader files. This will recreate any Fedora bootloader files missing from the boot partition. + </para> + <screen> +<prompt>#</prompt> <command>dnf reinstall grub2</command> + </screen> + </step> + <step> + <para> + Reinstall grub to the MBR. + </para> + <screen> +<prompt>#</prompt> grub2-install /dev/sda + </screen> + <substeps> + <step> + <para> + Check the existing firmware boot entries. + </para> + <screen> </section> </section> </section>