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Oliver Marshall 01-21-2011 06:48 AM

Boot order in Ubuntu 10 and Win 7
 
Hi
*
I have a laptop with win7 and ubuntu 10 on it. After installing Ubuntu 10 the default boot option became Ubuntu rather than Windows.
*
Is there an easy way to change the default boot option back to Win7 ?
*
Olly

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Nils Kassube 01-21-2011 07:53 AM

Boot order in Ubuntu 10 and Win 7
 
Oliver Marshall wrote:
> I have a laptop with win7 and ubuntu 10 on it. After installing
> Ubuntu 10 the default boot option became Ubuntu rather than Windows.
>
> Is there an easy way to change the default boot option back to Win7 ?

According to [1] it should work like this:

First locate the menu entry for Windows in the boot loader configuration
file with the command

grep ^menuentry /boot/grub/grub.cfg

in a terminal. There should be several lines and probably the last one
is for Windows. As I don't have Windows 7 I can only explain it with an
entry for Ubuntu. If the appropriate line is

menuentry 'Ubuntu, mit Linux 2.6.32-27-generic' --class ubuntu --class gnu-linux --class gnu --class os {

then the part between the single quotes would be needed for the second
step, i.e. here it would be

Ubuntu, mit Linux 2.6.32-27-generic

Now edit the grub config default file with the command

gksu gedit /etc/default/grub

Locate the entry for GRUB_DEFAULT and make it

GRUB_DEFAULT="Ubuntu, mit Linux 2.6.32-27-generic"

where the part between the double quotes is the exact menu entry from
the first step - of course you would use your Windows entry.

Finally run the command

sudo update-grub

and reboot to check if it works as desired.


Nils

[1] <https://help.ubuntu.com/community/Grub2#/etc/default/grub%20(file)>

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Doug 01-21-2011 09:01 AM

Boot order in Ubuntu 10 and Win 7
 
On 01/21/2011 03:53 AM, Nils Kassube wrote:

Oliver Marshall wrote:

I have a laptop with win7 and ubuntu 10 on it. After installing
Ubuntu 10 the default boot option became Ubuntu rather than Windows.

Is there an easy way to change the default boot option back to Win7 ?

According to [1] it should work like this:

First locate the menu entry for Windows in the boot loader configuration
file with the command

grep ^menuentry /boot/grub/grub.cfg

in a terminal. There should be several lines and probably the last one
is for Windows. As I don't have Windows 7 I can only explain it with an
entry for Ubuntu. If the appropriate line is

menuentry 'Ubuntu, mit Linux 2.6.32-27-generic' --class ubuntu --class gnu-linux --class gnu --class os {

then the part between the single quotes would be needed for the second
step, i.e. here it would be

Ubuntu, mit Linux 2.6.32-27-generic

Now edit the grub config default file with the command

gksu gedit /etc/default/grub

Locate the entry for GRUB_DEFAULT and make it

GRUB_DEFAULT="Ubuntu, mit Linux 2.6.32-27-generic"

where the part between the double quotes is the exact menu entry from
the first step - of course you would use your Windows entry.

Finally run the command

sudo update-grub

and reboot to check if it works as desired.


Nils

[1]<https://help.ubuntu.com/community/Grub2#/etc/default/grub%20(file)>


Whatever you do, FIRST:

cp grub.cfg grub.cfg.bak

Then you have a backup of the original file, in case you mess up.

--doug

--
Blessed are the peacemakers...for they shall be shot at from both sides. --A. M. Greeley


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Colin Law 01-21-2011 03:11 PM

Boot order in Ubuntu 10 and Win 7
 
On 21 January 2011 08:53, Nils Kassube <kassube@gmx.net> wrote:
> Oliver Marshall wrote:
>> I have a laptop with win7 and ubuntu 10 on it. After installing
>> Ubuntu 10 the default boot option became Ubuntu rather than Windows.
>>
>> Is there an easy way to change the default boot option back to Win7 ?
>
> According to [1] it should work like this:
>
> First locate the menu entry for Windows in the boot loader configuration
> file with the command
>
> grep ^menuentry /boot/grub/grub.cfg

That is the wrong file, it is /etc/default/grub that should be editted
(as described in the link [1] you posted). grub.cfg is automatically
generated and starts with the line
# DO NOT EDIT THIS FILE

Colin

>
> in a terminal. There should be several lines and probably the last one
> is for Windows. As I don't have Windows 7 I can only explain it with an
> entry for Ubuntu. If the appropriate line is
>
> menuentry 'Ubuntu, mit Linux 2.6.32-27-generic' --class ubuntu --class gnu-linux --class gnu --class os {
>
> then the part between the single quotes would be needed for the second
> step, i.e. here it would be
>
> Ubuntu, mit Linux 2.6.32-27-generic
>
> Now edit the grub config default file with the command
>
> gksu gedit /etc/default/grub
>
> Locate the entry for GRUB_DEFAULT and make it
>
> GRUB_DEFAULT="Ubuntu, mit Linux 2.6.32-27-generic"
>
> where the part between the double quotes is the exact menu entry from
> the first step - of course you would use your Windows entry.
>
> Finally run the command
>
> sudo update-grub
>
> and reboot to check if it works as desired.
>
>
> Nils
>
> [1] <https://help.ubuntu.com/community/Grub2#/etc/default/grub%20(file)>
>
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Nils Kassube 01-21-2011 04:40 PM

Boot order in Ubuntu 10 and Win 7
 
Colin Law wrote:
> On 21 January 2011 08:53, Nils Kassube <kassube@gmx.net> wrote:
> > Oliver Marshall wrote:
> >> I have a laptop with win7 and ubuntu 10 on it. After installing
> >> Ubuntu 10 the default boot option became Ubuntu rather than
> >> Windows.
> >>
> >> Is there an easy way to change the default boot option back to
> >> Win7 ?
> >
> > According to [1] it should work like this:
> >
> > First locate the menu entry for Windows in the boot loader
> > configuration file with the command
> >
> > grep ^menuentry /boot/grub/grub.cfg
>
> That is the wrong file, it is /etc/default/grub that should be
> editted (as described in the link [1] you posted). grub.cfg is
> automatically generated and starts with the line
> # DO NOT EDIT THIS FILE

Hmm, where did I advise to edit /boot/grub/grub.cfg?

[...]
> > Now edit the grub config default file with the command
> >
> > gksu gedit /etc/default/grub


Nils

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Colin Law 01-21-2011 04:59 PM

Boot order in Ubuntu 10 and Win 7
 
On 21 January 2011 17:40, Nils Kassube <kassube@gmx.net> wrote:
> Colin Law wrote:
>> On 21 January 2011 08:53, Nils Kassube <kassube@gmx.net> wrote:
>> > Oliver Marshall wrote:
>> >> I have a laptop with win7 and ubuntu 10 on it. After installing
>> >> Ubuntu 10 the default boot option became Ubuntu rather than
>> >> Windows.
>> >>
>> >> Is there an easy way to change the default boot option back to
>> >> Win7 ?
>> >
>> > According to [1] it should work like this:
>> >
>> > First locate the menu entry for Windows in the boot loader
>> > configuration file with the command
>> >
>> > grep ^menuentry /boot/grub/grub.cfg
>>
>> That is the wrong file, it is /etc/default/grub that should be
>> editted (as described in the link [1] you posted). *grub.cfg is
>> automatically generated and starts with the line
>> # DO NOT EDIT THIS FILE
>
> Hmm, where did I advise to edit /boot/grub/grub.cfg?

Sorry, you are quite right. Not paying attention here. Please erase
my post from your memory banks.
@OP - please follow the directions posted by Nils, his suggestions
come highly recommended by myself.

Colin

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Nils Kassube 01-21-2011 05:36 PM

Boot order in Ubuntu 10 and Win 7
 
Colin Law wrote:
> Sorry, you are quite right. Not paying attention here.

No problem. :)

> Please erase
> my post from your memory banks.

Done.


Nils

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