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computers / alt.os.linux.mageia / Re: Grub II menu location.

Grub II menu location.

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From: danie...@eternal-september.org (Daniel65)
Newsgroups: alt.os.linux.mageia
Subject: Grub II menu location.
Date: Thu, 2 Sep 2021 18:43:48 +1000
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by: Daniel65 - Thu, 2 Sep 2021 08:43 UTC

(Thank you David for responding to my previous question.)

On my Laptop, I have several OS's (Win7, MDA2007, MGA2, MGA4, MGA6 and
Ubuntu 16.04, I think) and each time I've installed an OS, I think I've
installed the GRUB menu with-in the OS's partition.

So, as I boot into the MGA6 GRUB, if I select MGA4, I then boot into the
MGA4 version of GRUB which offers Win7, MDA2007, MGA2 and MGA4. If I
then select MGA2, I then boot into its version of GRUB which offers
Win7, MDA2007 and MGA2. And so on!

Of course, if I select Win7, I go straight there.

AS I recall this is because I've always installed the GRUB menu with-in
the OS's partition .... as I don't ever recall anywhere, in the OS
installation process, being able to install GRUB elsewhere so that I'd
only have to make an OS selection once and then be taken directly to
that OS.

As I typed, I guess this selection is made somewhere with-in the
installation process, .... but, it seems, I keep missing that selection.

What should I be looking out for, please??
--
Daniel

Re: Grub II menu location.

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From: faeych...@nomail.afraid.org (faeychild)
Newsgroups: alt.os.linux.mageia
Subject: Re: Grub II menu location.
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by: faeychild - Thu, 2 Sep 2021 09:24 UTC

On 2/9/21 6:43 pm, Daniel65 wrote:
> (Thank you David for responding to my previous question.)
>
> On my Laptop, I have several OS's (Win7, MDA2007, MGA2, MGA4, MGA6 and
> Ubuntu 16.04, I think) and each time I've installed an OS, I think I've
> installed the GRUB menu with-in the OS's partition.
>
> So, as I boot into the MGA6 GRUB, if I select MGA4, I then boot into the
> MGA4 version of GRUB which offers Win7, MDA2007, MGA2 and MGA4. If I
> then select MGA2, I then boot into its version of GRUB which offers
> Win7, MDA2007 and MGA2. And so on!
>
> Of course, if I select Win7, I go straight there.
>
> AS I recall this is because I've always installed the GRUB menu with-in
> the OS's partition .... as I don't ever recall anywhere, in the OS
> installation process, being able to install GRUB elsewhere so that I'd
> only have to make an OS selection once and then be taken directly to
> that OS.
>
> As I typed, I guess this selection is made somewhere with-in the
> installation process, .... but, it seems, I keep missing that selection.
>
> What should I be looking out for, please??

In MCC (drakconf) > Boot > Set up Boot System. This may get you somewhere.
I think the same option appears during install

My Boot device option is only EFI system Partition. Probably because I
am using EFI and that is where it must be.

--
faeychild
Running plasmashell 5.20.4 on 5.10.60-desktop-2.mga8 kernel.
Mageia release 8 (Official) for x86_64 installed via Mageia-8-x86_64-DVD.iso

Re: Grub II menu location.

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From: BitTwis...@mouse-potato.com (Bit Twister)
Newsgroups: alt.os.linux.mageia
Subject: Re: Grub II menu location.
Date: Thu, 2 Sep 2021 05:35:00 -0500
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by: Bit Twister - Thu, 2 Sep 2021 10:35 UTC

On Thu, 2 Sep 2021 18:43:48 +1000, Daniel65 wrote:
> (Thank you David for responding to my previous question.)
> Grub II menu location.

> On my Laptop, I have several OS's (Win7, MDA2007, MGA2, MGA4, MGA6 and
> Ubuntu 16.04, I think) and each time I've installed an OS, I think I've
> installed the GRUB menu with-in the OS's partition.
>
> So, as I boot into the MGA6 GRUB, if I select MGA4, I then boot into the
> MGA4 version of GRUB which offers Win7, MDA2007, MGA2 and MGA4. If I
> then select MGA2, I then boot into its version of GRUB which offers
> Win7, MDA2007 and MGA2. And so on!
>

Grub menu is stored in /boot/grub2/grub.cfg

Proper way to update grub.cfg is boot the desired OS and run
update-grub2
grub2 will then scan the drive and build a new /boot/grub2/grub.cfg
for that install.

Re: Grub II menu location.

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From: danie...@eternal-september.org (Daniel65)
Newsgroups: alt.os.linux.mageia
Subject: Re: Grub II menu location.
Date: Fri, 3 Sep 2021 00:22:25 +1000
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by: Daniel65 - Thu, 2 Sep 2021 14:22 UTC

Bit Twister wrote on 2/9/21 8:35 pm:
> On Thu, 2 Sep 2021 18:43:48 +1000, Daniel65 wrote:
>> (Thank you David for responding to my previous question.)
>> Grub II menu location.
>
>> On my Laptop, I have several OS's (Win7, MDA2007, MGA2, MGA4, MGA6 and
>> Ubuntu 16.04, I think) and each time I've installed an OS, I think I've
>> installed the GRUB menu with-in the OS's partition.
>>
>> So, as I boot into the MGA6 GRUB, if I select MGA4, I then boot into the
>> MGA4 version of GRUB which offers Win7, MDA2007, MGA2 and MGA4. If I
>> then select MGA2, I then boot into its version of GRUB which offers
>> Win7, MDA2007 and MGA2. And so on!
>>
>
> Grub menu is stored in /boot/grub2/grub.cfg
>
> Proper way to update grub.cfg is boot the desired OS and run
> update-grub2
> grub2 will then scan the drive and build a new /boot/grub2/grub.cfg
> for that install.
>
Ah!! So this means that after running 'update-grub2' in my soon to be
install MGA8, if I were to select the MGA6 entry from the Grub2 menu, it
would start running MGA6 directly ...... RIGHT??
--
Daniel

Re: Grub II menu location.

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From: laidl...@hotkey.net.au (Doug Laidlaw)
Newsgroups: alt.os.linux.mageia
Subject: Re: Grub II menu location.
Date: Fri, 3 Sep 2021 02:00:34 +1000
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by: Doug Laidlaw - Thu, 2 Sep 2021 16:00 UTC

Re: Grub II menu location.

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From: dwhodg...@nomail.afraid.org (David W. Hodgins)
Newsgroups: alt.os.linux.mageia
Subject: Re: Grub II menu location.
Date: Thu, 02 Sep 2021 15:37:25 -0400
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by: David W. Hodgins - Thu, 2 Sep 2021 19:37 UTC

On Thu, 02 Sep 2021 12:00:34 -0400, Doug Laidlaw <laidlaws@hotkey.net.au> wrote:
>> As I typed, I guess this selection is made somewhere with-in the
>> installation process, .... but, it seems, I keep missing that selection.

You need to install grub legacy (grub-0.97-50.mga8) in order to be able to
install to a partition boot record, instead of to a drive's master partition
table. The drive must use a mbr style partition table.

grub2 only supports being installed to a master boot record, not a partition
boot record.

>> What should I be looking out for, please??

I'm pretty sure the installer now only supports installing to a master boot
record, not a partition boot record, so you'll have to install to a mbr, then
manually change it to a pbr after install. The grub legacy package doesn't work
on some newer hardware and is no longer supported upstream.

> Been there, done that. Maybe you need refind. It is the only popular
> bootloader I know of that isn't tied to a specific distro on your system.

refind, like grub2-efi, only works on systems booted in efi mode. It won't work
on a system that boots in legacy bios mode.

--
Change dwhodgins@nomail.afraid.org to davidwhodgins@teksavvy.com for
email replies.

Re: Grub II menu location.

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From: faeych...@nomail.afraid.org (faeychild)
Newsgroups: alt.os.linux.mageia
Subject: Re: Grub II menu location.
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by: faeychild - Thu, 2 Sep 2021 21:50 UTC

On 3/9/21 12:22 am, Daniel65 wrote:

> Ah!! So this means that after running 'update-grub2' in my soon to be
> install MGA8, if I were to select the MGA6 entry from the Grub2 menu, it
> would start running MGA6 directly ...... RIGHT??

It would launch MGA6 Correct!

--
faeychild
Running plasmashell 5.20.4 on 5.10.60-desktop-2.mga8 kernel.
Mageia release 8 (Official) for x86_64 installed via Mageia-8-x86_64-DVD.iso

Re: Grub II menu location.

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From: danie...@eternal-september.org (Daniel65)
Newsgroups: alt.os.linux.mageia
Subject: Re: Grub II menu location.
Date: Sun, 5 Sep 2021 22:02:21 +1000
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by: Daniel65 - Sun, 5 Sep 2021 12:02 UTC

David W. Hodgins wrote on 3/9/21 5:37 am:
> On Thu, 02 Sep 2021 12:00:34 -0400, Doug Laidlaw
> <laidlaws@hotkey.net.au> wrote:
>>> As I typed, I guess this selection is made somewhere with-in the
>>> installation process, .... but, it seems, I keep missing that selection.
>
> You need to install grub legacy (grub-0.97-50.mga8) in order to be able to
> install to a partition boot record, instead of to a drive's master
> partition
> table. The drive must use a mbr style partition table.
>
> grub2 only supports being installed to a master boot record, not a
> partition boot record.
>
>>> What should I be looking out for, please??
>
> I'm pretty sure the installer now only supports installing to a master boot
> record, not a partition boot record, so you'll have to install to a mbr,
> then manually change it to a pbr after install.

I don't know if I should ever question what you type, David, but that
seems backwards to me.

I thought I would have been installing Grub2 into the partition in which
MGA6 resides, then, if I selected MGA4 from the MGA6 Grub2 menu, then
the system would have had to leave the MGA6 partition and look elsewhere
(the MBR, maybe) to find out which partition MGA4 was installed in and,
then, would find the MGA4 Grub2 menu there from which I had to select MGA4.
--
Daniel

Re: Grub II menu location.

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From: dwhodg...@nomail.afraid.org (David W. Hodgins)
Newsgroups: alt.os.linux.mageia
Subject: Re: Grub II menu location.
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by: David W. Hodgins - Sun, 5 Sep 2021 21:51 UTC

On Sun, 05 Sep 2021 08:02:21 -0400, Daniel65 <daniel47@eternal-september.org> wrote:

> David W. Hodgins wrote on 3/9/21 5:37 am:
>> On Thu, 02 Sep 2021 12:00:34 -0400, Doug Laidlaw
>> <laidlaws@hotkey.net.au> wrote:
>>>> As I typed, I guess this selection is made somewhere with-in the
>>>> installation process, .... but, it seems, I keep missing that selection.
>>
>> You need to install grub legacy (grub-0.97-50.mga8) in order to be able to
>> install to a partition boot record, instead of to a drive's master
>> partition
>> table. The drive must use a mbr style partition table.
>>
>> grub2 only supports being installed to a master boot record, not a
>> partition boot record.
>>
>>>> What should I be looking out for, please??
>>
>> I'm pretty sure the installer now only supports installing to a master boot
>> record, not a partition boot record, so you'll have to install to a mbr,
>> then manually change it to a pbr after install.
>
> I don't know if I should ever question what you type, David, but that
> seems backwards to me.
>
> I thought I would have been installing Grub2 into the partition in which
> MGA6 resides, then, if I selected MGA4 from the MGA6 Grub2 menu, then
> the system would have had to leave the MGA6 partition and look elsewhere
> (the MBR, maybe) to find out which partition MGA4 was installed in and,
> then, would find the MGA4 Grub2 menu there from which I had to select MGA4.

I just tested to confirm. On a uefi system, the only option is grub2-efi installed
to the ESP. On a bios system, it no longer lists individual partitions as an option
for a place to install either grub-legacy or grub2. The option to select an
individual partition was removed from the installer as part of the addition of
support for gpt file systems.

It can still be used manually after installation, or by upgrading an existing
bios/mbr install, but not for new installs during installation.

Regards, Dave Hodgins

--
Change dwhodgins@nomail.afraid.org to davidwhodgins@teksavvy.com for
email replies.

Subject	Author
Grub II menu location.	Daniel65
Re: Grub II menu location.	faeychild
Re: Grub II menu location.	Bit Twister
Re: Grub II menu location.	Daniel65
Re: Grub II menu location.	faeychild
Re: Grub II menu location.	Doug Laidlaw
Re: Grub II menu location.	David W. Hodgins
Re: Grub II menu location.	Daniel65
Re: Grub II menu location.	David W. Hodgins