Dual system How to correctly remove Ubuntu----Erase grub residue information in MBR

Source: Internet
Author: User

It is estimated that most Linux beginners will encounter the installation of grub to the MBR, and now do not want to use Linux, directly with the partition tool to delete the Linux partition, the result is that the system can not start, the specific recovery methods are many, but sometimes very stubborn:

1, if you can start with a CD-ROM, then use the CD to boot to DOS, using FDISK/MBR to get it done.

2, if you can not use the CD-ROM boot, then start with a U disk (note that after the start of C is a U disk, if it is a U disk, it is troublesome), using FDISK/MBR no way to modify the actual hard disk MBR information, resulting in the normal coverage. (This I did not fix, decided to use 3 resolution)

3, through the U Disk (Network) to start Linux, download attachments, attachments are not installed Linux system backup out of the MBR information. After start-up use: DD if=boot_mbr.bak of=/dev/hda bs=446 count=1 Of course if you are SCSI or SATA drives, you may want to change/dev/hda to/DEV/SDA

If you are ready to remove Ubuntu but have not been removed due to the system does not start the child shoes can be referred to the following methods:

Windows+ubuntu dual system, need to remove Ubuntu when
Do not format the Linux partition directly, or you will not be able to enter the Windows system.
Before deleting the Linux partition, we need to write the boot information for booting Windows to the MBR.

Specific practices:
1. Download the attachment file.
2. Unzip and place the MBRFix.exe file in the C packing directory.
3. Open the cmd Command window, go to the C packing directory, (with cd command), then enter the command mbrfix/drive 0 fixmbr, and then confirm it.
Restart you will find that the system directly into Windows, this time you can delete the Linux partition.


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Linux2010-10-11 17:09:27 read 0 reviews 0 font size: Big Small Subscription If you have a Windows System installation disk/boot disk, or if you have a DOS tool installed, you can enter the pure DOS interface from Windows, You can then use the fixmbr command to generate the correct boot file for boot. ini, and use the FDISK/MBR command to repair the MBR.

For more details, see Windows XP dual system uninstall Linux Ubuntu. Here's how to uninstall Linux on a Windows dual system without a Windows System installation disk or a DOS command-line environment (Windows runs CMD into just a simulated DOS environment).

Using MbrFix.exe to uninstall Windows dual system Linux without the Windows System installation disk, without installing the Dwarf DOS Toolbox can also be easily implemented by uninstalling Linux (Ubuntu). The main problem with the dual-system offload of Linux is that when the Linux partition is formatted directly in Windows XP, the GRUB system bootstrapper is also deleted, so that no windows or Ubuntu system can be entered after a reboot. So before uninstalling Linux ubuntu, fix the MBR before removing the Linux partition. And MbrFix.exe is such a Windows repair MBR application software, MbrFix.exe not only supports Windows XP, but also supports 32-bit or 64-bit Windows Nt,windows 2000,windows Server 2003, Windows Vista, Windows Server 2008,windows 7 and Windows PE systems.

The steps to uninstall Linux Ubuntu using MbrFix.exe are as follows:

1. Download MbrFix.exe first into the Windows operating system, enter the www.sysint.no website to download MbrFix.exe, from the top down to the fourth software is; Unzip the zip package after download, and cut MbrFix.exe to C drive (system tray) Start-up run the-->CMD--CD command into the C-drive character--run command: mbrfix/drive 0 fixmbr/yes-->enter Carriage return, so the MBR repair is complete. The next step is to delete the Linux partition directly.

2. Format the delete Linux partition with the Windows XP system as an example: My Computer right-click and manage-Disk management-see a few partitions without a drive letter name (see, don't delete the Windows partition accidentally.) --right----delete the logical partition. Restart the computer, Grub no longer exists, dual system Linux Ubuntu uninstall complete, the computer starts to automatically enter the Windows XP system .... Ubuntu has vanished like a lost life in an earthquake.

Or you can download the MbrFix.exe package here

http://www.linuxidc.com/upload/2007_11/07110411258 868.rar

If you do not have permission to run cmd

Then right-click on the attachment--cmd----Administrator privileges to run.

Look at this:

Display from
Start menu, all Programs, accessories, command-line mouse right-click, select to execute as Administrator


1. Problems in the Win7 free space can not be used, unable to create a new volume, which means that the Ubuntu system has not been deleted, you can take the flash drive back into the try Ubuntu option to enter the terminal using the Fdisk tool to delete the partition, there is time to learn fdisk This tool is very useful.
2. Or diskman the software with the window tool. (This is more convenient)

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