This tutorial will explain how to restore Grub after installing Windows 7/Vista/Xp.If you are using dual boot PC with windows,Ubuntu for some reason you reinstall your windows now you may not see your grub 2 is loading because your windows installation might have been over written MBR (Master boot record).

This is the second article on dual-booting Windows 7 and Ubuntu 10.10 on a computer with one hard disk. The first, how to dual-boot Ubuntu 10.10 and Windows 7, showed how to accomplish the task with GRUB 2, the boot loader used by Ubuntu, installed on the Master Boot Record (MBR) of the hard disk. That is, GRUB is responsible for the dual-booting task.

Just about anyone who’s attempted dual booting or another non-standard boot setup has, at some point, made their own system unbootable. If the words “GRUB Error 2? or “No Valid System Disk Found” make you break into a cold sweat, then fear no more. Now you can include the Super Grub Disk in your geek arsenal, and say goodbye to boot errors.

Unfortunately, maintaining a multi-boot configuration like this can be a pain, especially if you later install an operating system which overwrites the GRUB boot loader you had in place (such as a version of Windows). If your boot loader is overwritten, you could be left with no choice but to boot the most recently installed OS.

But by the time you are done with this tutorial, GRUB 2 will be in the Partition Boot Record (PBR) of the boot partition of the Fedora installation, and Windows 8′s boot program will be restored to the boot manager, making it the primary boot manager, so that every time the computer is rebooted, you will see this screen, or a bland, black one.

Unfortunately, maintaining a multi-boot configuration ... can be a pain, especially if you later install an operating system which overwrites the GRUB boot loader you had in place (such as a version of Windows). If your boot loader is overwritten, you could be left with no choice but to boot the most recently installed OS.

How to dual-boot Windows 7 and Debian 6 is the latest in the series of articles on dual-booting Windows 7 and Linux and BSD distributions. When attempting to dual-boot Windows and a Linux or BSD distribution, one of the most important decisions you will have to make is where to install the bootloader.

GRUB, the GRand Unified Bootloader, has been the default boot loader on virtually all Linux distributions since LILO (LInux LOader) lost its shine. LILO is still an option in only a handful of distributions (Mandriva is one), but on most, GRUB is the sole boot loader. GRUB’s menu has a very bland interface, and BURG is an attempt to prettify it, spice it up a bit.

If you are running a multi-boot configuration with Windows and Linux, and using GRUB as the bootloader, you may be headed for trouble.