Hello,
I had a bad surprise.
After the last update grub2-mkconfig -o /boot/grub2/grub.cfg
the grub.cfg is not correct
I have:
menuentry 'Fedora (4.1.2-200.fc22.i686+PAE) 22 (Twenty Two)' --class fedora
--class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option
'gnulinux-4.1.2-200.fc22.i686+PAE-advanced-78c1373b-43b8-4706-8771-4bc5a2ea0fa4'
{
set gfxpayload=text
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos6'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos6 --hint-efi=hd0,msdos6
--hint-baremetal=ahci0,msdos6 --hint='hd0,msdos6'
fff6282e-eb24-405f-b43b-06ba5cc92c70
else
search --no-floppy --fs-uuid --set=root fff6282e-eb24-405f-b43b-06ba5cc92c70
fi
linux16 /vmlinuz-4.1.2-200.fc22.i686+PAE root=/dev/mapper/VolGrpSys0-root ro
vconsole.keymap=fr rd.dm=0 rd.md=0 rd.luks=0 vconsole.font=latarcyrheb-sun16
rd.lvm.lv=VolGrpSys3/root
initrd16 /initramfs-4.1.2-200.fc22.i686+PAE.img
}
while it should be:
inux16 /vmlinuz-4.1.2-200.fc22.i686+PAE root=/dev/mapper/VolGrpSys0-root ro
vconsole.keymap=fr rd.dm=0 rd.md=0 rd.luks=0 vconsole.font=latarcyrheb-sun16
rd.lvm.lv=VolGrpSys0/root
VolGrpSys0/root is a fedora 20.
where did grub2-mkconfig find this wrong information?
How can I fix it (i.e. not manually in gbub.cfg
Thank.
===========================================================================
Patrick DUPRÉ | | email: pdupre(a)gmx.com
Laboratoire de Physico-Chimie de l'Atmosphère | |
Université du Littoral-Côte d'Opale | |
Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44
189A, avenue Maurice Schumann | | 59140 Dunkerque, France
===========================================================================
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Two things to check. Make sure the fstab on both are correct because
grub2-mkconfig depends on both fstabs to build the grub.cfg.
Next would be to add line GRUB_DISABLE_OS_PROBER="true" in the
/etc/default/grub and the it will only make a grub.cfg for Fedora 22
and you can see if that's correct. If it's still not correct, but
fstab is correct, then I'm lost, maybe it's a bug.
If that fixes it, but you want a Fedora 20 entry in the Fedora 22 GRUB
menu, then I recommend editing /etc/grub.d/40_custom to add a menu
entry that searches for the F20 boot volume and uses configfile
command to point to the Fedora 20 grub.cfg. If you post a Fedora 20
menuentry it's easier to give an idea what this looks like. Mine looks
like this:
### Created by me ###
{
set root='hd0,gpt7'
search --no-floppy --fs-uuid --set=root c9f73a53-7d83-4ead-991a-c445d7c3e5d9
configfile /boot/grub2/grub.cfg
}
But it's very simple, because it's a UEFI example so there's not need
to load LVM or file system modules because that's handled by the
firmware instead of GRUB, but you get the idea.
Chris Murphy