Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Dual-boot: Windows 7 & Ubuntu - problem

08 Apr 2011   #21


You don't need to repair Win7 if it boots when plugged in alone.

You only need to plug Ubuntu HD in alone and either uninstall GRUB or reinstall Ubuntu without GRUB.

After removing GRUB or Reinstalling Ubuntu, plug back in Win7 HD. Set preferred OS HD as first HD to boot in BIOS setup, boot the other HD using one-time BIOS Boot Menu key.

If this fails, you can install EasyBCD 2.02 to Win7 to add Linux on the Add Boot Menu Entry tab.

My System SpecsSystem Spec
08 Apr 2011   #22

Windows 7 Home Premium x64

How do I uninstall GRUB, then?
I can sure wipe the hole drive without installing GRUB, if thats all it needs.
My System SpecsSystem Spec
08 Apr 2011   #23


Probably best unless someone who knows GRUB can show you how to uninstall the mess.

Unplug Win7 HD, set Ubuntu HD as first HD to boot in BIOS setup

Boot DVD or Repair CD, press Shift + F10 at first screen to access Command line: Disk - Clean and Clean All with Diskpart Command
My System SpecsSystem Spec

08 Apr 2011   #24

Windows 7 Home Premium x64

I booted into the Ubuntu LiveCD and reinstalled Ubuntu without bootloader - same problem.

I simply cannot boot into Windows wether the harddrive have Ubuntu on it, or not.
My System SpecsSystem Spec
08 Apr 2011   #25


Set Win7 HD as first HD to boot in BIOS setup, after DVD drive.

Will it boot then with Ubuntu HD plugged in? WIll Ubuntu boot via BIOS Boot Menu key?

Now try reversing this to see if it works.

Do you have AHCI hotplugging to plug in Linux after Win7 boots if it continues blocking it's boot, so that you can add Linux to Win7 using EasyBCD?

Can you post back a screenshot of your full Disk Mgmt drive map with listings using Snipping Tool in Start Menu?
My System SpecsSystem Spec
08 Apr 2011   #26

Windows 7 Home Premium x64

If I try to boot directly to my Windows 7 SSD (skipping Windows boot manager) I get

"there was a reading error
press ctrl + alt + delete to restart"

My bootorder is like this:

Windows Boot Manager

If I go:


I get reading error as the one above.

And no, I cannot plug the HD in after boot even if I got AHCI enabled..
My System SpecsSystem Spec
08 Apr 2011   #27
Mike Connor

Several, including Windows 7 x64 Ultimate

I don't know if this will help you, and I don't want to add any confusion, but you might like to have a look at this;

Download EasyBCD 2.0.2 - NeoSmart Technologies

This Grub business caused me a lot of headaches on various machines. Sorry I can't be more helpful.

Regards....Mike Connor
My System SpecsSystem Spec
08 Apr 2011   #28

Windows 7 Home Premium x64

I already tried EasyBCD without luck.
My System SpecsSystem Spec
08 Apr 2011   #29

Win 7 Ult + Starter, XP Pro +Home, 2kAS, Linux Mint 8, SuperOS

Dual-boot: Windows 7 & Ubuntu - problem-hemulen.png

From that there is nothing to indicate any Linux partitions there at all. Presumably the Linux disks have been detached.

The top partition is where your System reserved files are - the 100MB partition that so many people do not like or see any reason for to keep.

I think it is very useful as a utility for bootloaders, system recovery files etc

I make sure it has a volume label SYSTEM RESERVED and usually give it a drive letter B: since I have no use AT ALL for a second floppy drive, and only very occasional use of a virtual A:\ drive.

Thus I can see and edit B:\ from Windows if necessary.
Dual-boot: Windows 7 & Ubuntu - problem-sysres.png

Useful for boot files from all OSs - XP (including the XP cmdcons folder), Vista, Win7 and the Neosmart EasyBCD NST folder. Grub4DOS and other boot files could also live here (Note the dummy MSDOS.sys, IO.sys, Autoexec.bat and Config.sys are still put there by Windows for backwards compatibility).


Back on topic:

Why not detach all drives except your SSD and CD, check in BIOS that both are seen OK, and boot from the windows 7 CD?

Here's the manual way it should be done, I think:

Boot from the Windows 7 DVD, SHIFT-F10 from the first menu to bring up a command prompt window
from the prompt:
DISKPART> list disk
Disk ### Status Size Free
-------- --------------- ------ -----
Disk 0 Online nnnnn GB nnnnn B
DISKPART> select disk 0
Disk 0 is now the selected disk
DISKPART> list partition
Partition ### Type Size
------------- --------- -------
Partition 1 Primary 101 MB etc
Partition 2 Primary 74 GB etc
DISKPART> select partition 2
Partition 2 is now the selected partition
DISKPART> active
Partition 2 is now active

Reboot, startup Windows 7 DVD again and at the Windows Recovery console, shift-F10 at the first dialog again.
Now for the Boot Sector:
The Windows installation is on C:\Windows on an active partition. There is no boot information, no master boot record (MBR) and no Boot Configuration Data (BCD.)
From the recovery command line prompt, type:
BCDBOOT c:\windows
reboot by typing SHUTDOWN /r
That should reboot you back to windows, and you can remove the 100MB partition if you wish - there is something wrong with it - it should have some free space, not 100% ledig!

My System SpecsSystem Spec
08 Apr 2011   #30

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

I must have missed something here - how did he take that screenie if he can't get into windows?
My System SpecsSystem Spec

 Dual-boot: Windows 7 & Ubuntu - problem

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar help and support threads
Thread Forum
Win 7 , Ubuntu dual boot, windows wont boot, startup disk doesnt help
Hi a couple of months ago my system crashed, windows 7 wouldnt boot, and I misplaced my installation disk. I had the problems several times since obtaining the computer several years ago. (Lenovo IDeaPad y450). I attributed the problem to what I believed was a bad hard disk, so I replaced it with a...
General Discussion
Dual Boot problem, Ubuntu is the main boot
hello I have Asus laptop with OEM Win7 HomeP 64bit on it, I installed Ubuntu 12.04 along side with Win7, didn't know that Ubuntu will be the main boot, I used Ubuntu 11.10 a year a go and Windows was my main boot, I tired several way to retrieve Win7 as main boot but didn't work. I tried to...
Installation & Setup
Dual boot Ubuntu and Windows 7 wireless problem
I set up a dual boot of Ubuntu and Windows 7 on my lenovo u330 laptop a couple months ago and everything was working fine. That was till I found a problem with the wireless when switching from Ubuntu over to 7. I found that if I left the wireless off in Ubuntu and restart to 7, the wireless is...
Network & Sharing
Dual boot problem while installing ubuntu 10.10 with windows 7 on hp
Hello friends, I am trying to make my new laptop hp- dv6 3174 dual boot with two operating systems Windows 7(which is preinstalled) and Ubuntu 10.10. But after i install ubuntu, windows is getting erased. I tried repairing with system repair disc but not possible. Even if i put system repair...
Installation & Setup
Unable to boot Windows 7 after unistalling Ubuntu Dual boot
After deleting the partition on which Ubuntu was installed and enlarging the windows partition to fill the old space at the same time( stupid I know), I am unable to boot to Windows 7. All I see is a command line message that says Unknown File System and on the next line says Grub Rescue> with...
Installation & Setup
Old Ubuntu dual boot problem
I had Ubuntu installed on an external HDD, but back when I had XP, I formatted it for general storage. Now I'm running Seven and I have no idea how to remove the Ubuntu option from my Dual Boot menu. Please help...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 20:36.

Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App