Problems with the master boot record (MBR) of a system may prevent the system from booting. The MBR may be affected by malicious code, become corrupted by disk errors, or be overwritten by other boot loaders when experimenting with multiple operating systems on a host.
What you need to do is to use the Recovery Console from the Windows XP CD-ROM disk and create the new MBR on the partition where Windows XP is.Here are the commands and their description you can use to do it:
/add "Adds a Windows installation to the boot menu list."
/rebuild "Iterates through all Windows installations so that you can specify which installations to add."
/scan "Scans all disks for Windows installations and displays the results so that you can specify which installations to add."
/default "Sets the default boot entry."
/list "Lists the entries already in the boot menu list."
/disableredirect "Disables redirection in the boot loader."
/redirect "Enables redirection in the boot loader with the specified configuration."
So here is what you must do:
Boot with the Windows XP installation CD-ROM disk.When you are prompted, press R to repair a Windows XP installation using the Recovery Console.
If repairing a host with multiple operating systems,select the appropriate one (XP) from the menu. If you have only one operating system,enter number "1" to select it.Enter the administrator password if prompted.
To fix the MBR (master boot record),use the following command:
fixmbr
I assume that your installation is on the "C:" drive.You will be presented with several scary warning messages of which will make you want to say no lol.Microsoft is exceptionally vague regarding the conditions under which "fixmbr" can cause problems although they are clear about the consequences (losing all data on the hard drive),so use this at your own risk.
Type "y" and ENTER to fix the MBR.Type "exit" to leave the recovery console and reboot.
MY ADVICE: If I am on your place,I would FIRST copy all my important data somewhere safe using lets say Linux Ubuntu CD and THEN experiment with this.So like I said.If you are NOT going to save your data first then use this at your OWN RISK!
Cheers!
And NOT cheers to the damn MBR!I hate them lol!Especially when they disappear for no god damn reason like to me several times haha xD
Cheers mate xD!