Windows wont boot from Grub

[WinSlayer]

Hello friends, I have a computer with windows Vista and i wanted to install ubuntu. So i got a new dedicated hard disk for ubuntu and changed the vista hard disk to the secondary hard disk. After installing Ubuntu however i am facing some problems. Windows wont boot from Grub. Can anyone help me with this?

[FaMe FacToR]

Is there a boot option for Windows Vista in ubuntu's grub boot loader? If it is then what exactly is the problem? Can you post a bit in detail? If there is no boot option for windows in grub, then from ubuntu you will have to create a boot entry for windows in the grub boot loader. See this thread might help : Grub & Boot Windows

[WinSlayer]

How to create a boot entry in grub? There is no option for windows in the ubuntu's grub boot loader. I don't know what went wrong. Will i be able to boot from Windows without formatting Windows or ubuntu? Please help me guys...

[Rudra.J]

If your ubuntu disk is primary hard disk and windows hard disk is secondary, so the hard disk scheme will be :
For ubuntu the boot partition will be hd(0,0) and for windows it will be hd(1,0)
So now boot with ubuntu and open terminal. In terminal type :

sudo gedit /boot/grub/menu.lst

After pressing enter a text file will open up. There at the bottom, just paste the following lines :

title Windows Vista
root (hd1,0)
makeactive
chainloader +1

Now save the file and close it. Now reboot your computer and check if Windows Vista boot option appears and loads or not...