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Windows 7: Configuring BootMgr for dual boot Win7/Ubuntu ?


30 May 2011   #1

Windows 7 x64
 
 
Configuring BootMgr for dual boot Win7/Ubuntu ?

Hello, I need some hint about configuring Windows7 bootmgr to give a choice of these two OS.
I have Windows 7 and Ubuntu installed on two separate primary partitions, but always will boot right to Windows. So (if even bootmgr supports booting into Linux partition), I'd like to get any guidance howto, since I'm not familiar with bcdedit (except that this tools seem not to work under Windows at all)

My System SpecsSystem Spec
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30 May 2011   #2

Windows 7 Ultimate SP1 64-Bit
 
 

Check out this tut:
Dual Boot Windows 7 and Ubuntu
My System SpecsSystem Spec
30 May 2011   #3

Windows 7 x64
 
 

thx, I've already found wonderful utility EasyBCD which did all necessary.
My System SpecsSystem Spec
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30 May 2011   #4

Windows 7 Ultimate SP1 64-Bit
 
 

You're quite right, EasyBCD is an excellent utility, which many of us use.

I posted the link to the tutorial as there is a wealth of information there from some very dedicated people. I use them a lot.

Anyway, pleased to hear you've solved your problem and thanks for letting us know.
My System SpecsSystem Spec
31 May 2011   #5

Windows 7 x64
 
 

I'd have one more question though. After installing Ubuntu to 2nd partition, I get Ubuntu boot menu at first when I boot from main hard drive.
Is there a way to give control over booting back to Windows bootmgr?
I have tried to fix this from Windows repair CD console by writing :

Bootsect /nt60 sys

and

Bootsect /nt60 C:

However none of these seem to make Windows 7 main operating system.
This is no big problem as Ubuntu boot menu gives choice to Boot from Windows partition, just it has higher priority which I don't prefere.
My System SpecsSystem Spec
31 May 2011   #6
Microsoft MVP

W 7 64-bit Ultimate
 
 

See what happens when you fool with Linux/Grub?
My System SpecsSystem Spec
02 Jun 2011   #7

W7 Pro x64
 
 

Quote   Quote: Originally Posted by Anakunda View Post
I have tried to fix this from Windows repair CD console by writing :

Bootsect /nt60 sys

and

Bootsect /nt60 C:

However none of these seem to make Windows 7 main operating system.
To restore Windows 7 bootmgr you need bootrec.exe, not bootsect.exe - see How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows

HTH
My System SpecsSystem Spec
02 Jun 2011   #8

Windows 7 x64
 
 

Quote   Quote: Originally Posted by qjpus View Post
To restore Windows 7 bootmgr you need bootrec.exe
You were right, finally I got Windows 7 MBR restored. Unfortunatelly during my previous attempts to restore Windows 7 MBR I had to destroy Ubuntu boot sector somehow, when switching to Ubuntu menu entry of bootmgr, I get this error screen now:

Code:
Starting cmain() ...   
 (hd0,2) 
   [Multiboot-kludge, loadaddr=0x100000, text-annd-data=0x634e, bss=0x0, entry=0x10092c]
error: unknown filesystem.
grub rescue> _
Any ideas how to make Ubuntu partition bootable again?
My System SpecsSystem Spec
03 Jun 2011   #9

W7 Pro x64
 
 

This are different issues.
There are obviously 2 solutions:
a) dual boot using Windows 7 bootmgr,
b) dual boot using Grub.
First question - do you need to boot using Windows 7 bootmgr?
I have actually 3 systems (Windows 7, XP and Ubuntu) and personaly prefer Grub. All system boot nicely and everything works nice.
If you are after a) - there is plenty of info on the internet. Roughly you should create ubuntu bootloader, copy that to windows partition and modify BCD using bcd edit - pain in the backside contrary to nearly automatic detection using Ubuntu/Grub.
If you are happy with b) then there is also plenty of info on the inet. You would need to boot Ubuntu from LiveCD and reinstall Grub, eg: [all variants] Need to reinstall grub from install disk - Help please [Archive] - Ubuntu Forums

HTH
My System SpecsSystem Spec
04 Jun 2011   #10

Windows 7 x64
 
 

Quote   Quote: Originally Posted by qjpus View Post
First question - do you need to boot using Windows 7 bootmgr?
HTH
I like bootmgr more and want Windows 7 as timeout default which grub boot menu didnot offer.
But ok I have reinstalled Ubuntu from original CD, then again reverted back Windows MBR from ParagonCD, and voila, now the boot goes right to bootmgr menu, and Ubuntu entry is able to boot Linux So I can consider the dual booting hassle definitely solved. Thanks to all for advices and you can lock the topic.
My System SpecsSystem Spec
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 Configuring BootMgr for dual boot Win7/Ubuntu ?




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