If you have a Fedora live disk you can boot to that and use the chroot
method to install grub from your Fedora install on your disk. A bit more
complicated but good tutorials out there.
Things are always complicated when you do several distros on a single
disk. A bit easier if separate disks. You might consider investing in a
USB-SSD caddy case and SSD so you can boot external if you only use the
function occasionally. Or if you have a DVD drive bay there are SSD drive
by converters for that - loose the DVD drive but have a second "hard
disk". I did this on my newest laptop to avoid trying to install W8 and
Linux on the same drive. It worked out fine.
On Mon, Jul 11, 2016 at 10:38 AM, Tod Merley <todbot88(a)gmail.com> wrote:
Ok, I meant to say "Google is our friend". I consider
myself your friend
but the time to put together tutorials on procedures where many already
exist is not what I plan to do today.
On Mon, Jul 11, 2016 at 10:36 AM, Tod Merley <todbot88(a)gmail.com> wrote:
> It sounds like your "most recent" distro is Fedora - so - re-install grub
> from Fedora. Google is your friend.
>
> On Mon, Jul 11, 2016 at 6:45 AM, Kevin Wilson <wkevils(a)gmail.com> wrote:
>
>> Hi,
>> Thanks Todd.
>> The thing is that now CentOS is installed and it is the current
>> control and it indeed uses an older grub. So what do you suggest ?
>> That I will reinstall Ubuntu on Fedora on the current machine so they
>> will the "current control"? It is quite a hassle as there is no free
>> partition for it (unless I will resize it); and already there are 3 OS
>> installed on that machine. I believe there should be another way to do
>> it with the old grub without installing another OK on the same
>> machine,
>>
>> Regards,
>> Kevin
>>
>> On Sun, Jul 10, 2016 at 9:40 PM, Tod Merley <todbot88(a)gmail.com> wrote:
>> > I mean run "update-grub" from the Ubuntu distribution. It is the
>> control.
>> >
>> > On Sun, Jul 10, 2016 at 11:38 AM, Tod Merley <todbot88(a)gmail.com>
>> wrote:
>> >>
>> >> On a multi-boot machine the big question is “who controls the boot
>> >> process”.
>> >>
>> >>
>> >> My “big box” has two SSD (Ubuntu, CentOS) a 1T HDD (eight Linux
>> partitions
>> >> if memory serves) and a small clunky HDD with W7.
>> >>
>> >>
>> >> In this case I choose Ubuntu to control the boot process and
>> understand
>> >> that if I update the Kernel in any of the other distros I will not be
>> able
>> >> to boot to it unless I run update-grub (Ubuntu script similar to your
>> >> mkconfig command) which will look at all the partitions and disks to
>> boot to
>> >> the most recent first.
>> >>
>> >>
>> >> Likely CentOS is your current control and it likely uses an older
>> grub.
>> >>
>> >>
>> >> Choose a recent “grub2” distro and make it your “boot control”.
>> >
>> >
>> >
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