Unable to boot into Windows Vista, gets into grub prompt

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I have the following scenario:

I had a dual boot option on my laptop with Windows Vista Home Premium and Red Hat Linux Enterprise Edition 5.0. In order to install Ubuntu on the partition having RHEL, I deleted that partition using windows disk management. Then I installed Ubuntu using Wubi on a drive other than the C drive which has Vista.

After the installation I restarted the box and now I can’t log on to my Windows and all I get on start up is Grub prompt. I tried a few things at the grub prompt like – root (hd0,0) but all I get is filesystem type unknown, partition type 0x7

I also have Ubuntu on a USB using which I can see my Windows partitions.

Any help with this is much appreciated. I’m kind of a novice with grub, so haven’t tried anything advanced.

cheers

Answer

Try doing this, I’ve had this work on a dual boot with windows where grub messed up the master and slave partitions (Windows still thinks its on the master and gets messed up)

Add the following lines to /boot/grub/menu.lst

title Windows 
map (hd0) (hd1) 
map (hd1) (hd0) 
rootnoverify (hd1,0)
chainloader +1

then after that is in do this command:

update-grub

And reboot

Edit: http://www.linuxjournal.com/article/4622 This is a pretty good all inclusive guide to grub and has some directions for directly starting up a partition from the prompt

Attribution
Source : Link , Question Author : Arnkrishn , Answer Author : Shial

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