On 7/12/19 10:22, Robert McBroom via users wrote:
On 12/6/19 5:41 PM, Samuel Sieb wrote:
On 12/6/19 1:52 PM, Robert McBroom via users wrote:
On 12/6/19 2:06 AM, Anthony F McInerney wrote:
On Thu, 5 Dec 2019 at 19:04, Samuel Sieb <sam...@sieb.net
<mailto:sam...@sieb.net>> wrote:
On 12/5/19 8:02 AM, Robert McBroom via users wrote:
> Updated from Fedora 29 to 31 on a legacy system. Kernel
updates no
> longer update grub.cfg to the new kernel. Ran grub2-mkconfig -o
> /boot/grub2/grub.cfg which finds Windows and Centos 6 but none
of the
> Fedora kernels. /boot is in its own partition and the Centos
kernels
> are in the Centos partition on a second drive. A backup of
windows 7 on
> a usb drive is even found by os-prober. Everything these days
seems to
> point to uefi systems.
grub has been switched to use BLS. Check if you have files in
/boot/loader/entries/.
That's interesting. First i've heard of BLS.
It would seem that runs into a known issue
https://bugzilla.redhat.com/show_bug.cgi?id=1652806
And the way tl;dr is "on BIOS systems you have to run
'grub2-install /dev/sdX'
Not installing grub, getting grub to recognize system entries.
If this is an old install, you might need to update the bootloader
bits that are stored in the mbr. It might too old to support BLS.
That's why if it's not an EFI system, you should run grub2-install to
make sure it's up to date.
Updated with the update to f31.
I'm running F30 in a VM, so in my case even though the motherboard I
have is uefi, fedora is ignoring it and running in legacy mode.
Consequently, because I don't like the BLS results, I run grub2-mkconfig
-o /boot/grub2/grub.cfg to build the cfg file (this command finds all
the fedora kernels quite happily), following by grub2-install /dev/sda
to get the grub boot sequence into the mbr
Because I don't like the BLS results, they look like the results from
grubby which I also hated, I have the following statement in
/etc/default/grub to disable BLS:
GRUB_ENABLE_BLSCFG=false
regards,
Steve
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