SOLVED: GRUB menu not showing updated kernels
Re: GRUB menu list problem
Do you have an /etc/grub.d/30_os-prober file?
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke
Re: GRUB menu list problem
Yes.TrevorH wrote:Do you have an /etc/grub.d/30_os-prober file?
Re: GRUB menu list problem
EDIT (11-24-2017)
OK, I restored everything from an image backup dated before I sent the laptop for repair, and both OS's show up again. However, I updated both Centos and Mint to the latest updates and kernels, but I can't get the new kernels to show up on the GRUB menu list.
On the Mint side I ran
"sudo update-grub" and it added all the new Mint kernels there.
On the Centos side I ran
grub2-mkconfig -o /boot/grub2/grub.cfg,
and now all the kernels show up from Centos and Mint in the /boot/grub2/grub.cfg file dated today, but they are still not in the boot up menu.
I do notice that there is a separate and older dated /boot/grub.cfg with the current menu list.
Am I now supposed to copy /boot/grub2/grub/cfg into /boot/grub/cfg and everything will work? If that works it seems like something is not set up properly or I am running the wrong command.
OK, I restored everything from an image backup dated before I sent the laptop for repair, and both OS's show up again. However, I updated both Centos and Mint to the latest updates and kernels, but I can't get the new kernels to show up on the GRUB menu list.
On the Mint side I ran
"sudo update-grub" and it added all the new Mint kernels there.
On the Centos side I ran
grub2-mkconfig -o /boot/grub2/grub.cfg,
and now all the kernels show up from Centos and Mint in the /boot/grub2/grub.cfg file dated today, but they are still not in the boot up menu.
I do notice that there is a separate and older dated /boot/grub.cfg with the current menu list.
Am I now supposed to copy /boot/grub2/grub/cfg into /boot/grub/cfg and everything will work? If that works it seems like something is not set up properly or I am running the wrong command.
Re: GRUB menu not showing updated kernels
SOLVED:
After looking at timestamps and the various grub files I tried the following and it worked:
1) Booted up into Linux Mint and ran
update-grub
2) Booted up into Centos and ran
grub2-mkconfig -o /boot/grub/grub.cfg
The problem was that I was running grub2-mkconfig -o /boot/grub2/grub.cfg like I saw in examples everywhere, but grub was not picking up the grub,cfg file in /boot/grub2, rather it was using /boot/grub/.
After looking at timestamps and the various grub files I tried the following and it worked:
1) Booted up into Linux Mint and ran
update-grub
2) Booted up into Centos and ran
grub2-mkconfig -o /boot/grub/grub.cfg
The problem was that I was running grub2-mkconfig -o /boot/grub2/grub.cfg like I saw in examples everywhere, but grub was not picking up the grub,cfg file in /boot/grub2, rather it was using /boot/grub/.