Wednesday, March 23, 2011

Re: [LINUX_Newbies] Re: Grub: Dual Boot don´t work correctly

 

On Tue, Mar 22, 2011 at 4:42 PM, KLaus <klauslms@yahoo.de> wrote:
>
> Hello Chris,
> I had restored the Windows boot sector after the first failure or attempt
> as you described. Even the repair of Grub doesn´t had success.
> By the way: with Grub 1 I had no problems to restore. But there seems
>to be no way to install Ubuntu 10.10 with Grub 1 (?).
> Kind regards
> Charlyms
>

I know you can install grub 1 after you have a working Ubuntu system.
See here for one example:
<http://ubuntuforums.org/showthread.php?t=1298932>
It should be possible to skip the installation of grub 2, and then
install grub 1 from a live CD, but there would be a lot of tinkering
with that and it looks like you currently have bigger fish to fry.
Someone with more experience can probably better advise you there.

>>On Tue, Mar 22, 2011 at 8:00 PM, Roy <linuxcanuck@gmail.com> wrote:
>>
>> If you install Windows first then you don't have a problem because
>> Ubuntu will install grub which is OS agnostic.

Would you agree it is more correct to say if you partition your hard
drive *first* and then install Windows followed by installing Linux
you avoid problems? As I describe below, repartitioning windows
appears to be the cause of the "startup/boot" error I was describing
previously.

>>>On Tue, Mar 22, 2011 at 1:04 PM, dbneeley <dbneeley@gmail.com> wrote:
> >>Chris,
>>> I have installed Ubuntu on perhaps twenty different systems that
>>> had Win XP on them, and never had to do what you describe.
>>> In fact, the Windows boot overwrites the first, boot sector of the
>>>drive--which is where the boot loaders such as Grub normally are.

Looking into this descrepancy more, I have finally turned up a
document that describes the situation I was describing:
<https://help.ubuntu.com/community/RecoveringWindows#Resizing%20Windows%20Vista%20/%207%20Partitions>

|quote|
Windows 7 and Vista sometimes fail to boot after its partitions are
resized outside of Windows. This is due to Windows using a very
simplistic boot-loader. A regular file-system check is normal and to
be expected on the first boot-up to Windows 7 or Vista because GParted
programs Windows to do that by putting the 'dirty' flag in its
file-system metadata.

To recover from this boot problem, you can either;

1. Boot from your Windows Recovery CD and select "Startup Repair"
|end quote|

Apparently Windows runs a check on partition sizes which it stores in
one of its boot files, and will not boot if it sees something other
than what it is looking for. A proposed alternate solution was to
reboot windows once to allow its own bootloader to resolve the issues
before installing Grub. Although I don't know enough about the ins
and outs of bootloaders and boot files to verify the accuracy of all
this information, it is consistent with what I have read in the
past...

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