Ubuntu
grub2 package

Update to grub caused grub rescue prompt, dual boot windows7 desktop

Asked by Kishore

Installed 10.04 on my desktop from within windows 7. All went OK i need to restart the pc i have done the same .I have got the two boot options windows7 and ubuntu. I have selected ubuntu first time and logged fine and i have got message from update manager that the some packages have updates. I have selected all around 238 and update. During that it asked me to update grub which I did and as there was only one disk showing clicked forward.
Now on reboot I have grub rescue prompt, no such device.
Hard drive is a single 750gig drive with windows on one partition and ubuntu in another and two more partitions.
I don't have windows7 cd or ubuntu live cd? What should I do now please help as I don't have any option.

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Ubuntu grub2 Edit question
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actionparsnip
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actionparsnip (andrew-woodhead666) said : 		#1

Grab the ISO, MD5 test it then transfer it properly to a USB stick / SD card. You can boot to that, chroot to the installed system and run:

sudo update-grub

May help.

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Kishore (kurrakishore) said : 		#2

Thanks for the reply. Can you please describe in detail. As I don't have knowledge
With Linux or grub. What needs to be done to grab iso or md5.
Thanks

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Kishore (kurrakishore) said : 		#3

I have no idea about grub rescue commands as well. I have seen ls, set command in other messages.
If I type ls it shows (hd0)
If I type set it displays
prefix=(hd0)/boot/grub
root=hd0
If I type sudo it says unknown command
What else can we try?

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Best actionparsnip (andrew-woodhead666) said : 		#4

Well the USB you can make with usb-creator-gtk or this if you have a windows PC handy:
http://www.howtoforge.com/creating-a-bootable-ubuntu-usb-thumbdrive-from-windows-with-usbuntu-live-creator

You can then mount the / partition by clicking the partition under places. Once mounted you can use this:
http://karuppuswamy.com/wordpress/2010/06/02/how-to-chroot-to-ubuntu-using-live-cd-to-fix-grub-rescue-prompt/

Instead of immediately asking for more details, try websearching based on the advise given. You will learn more than if you are simply spoonfed commands etc.

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Kishore (kurrakishore) said : 		#5

Thanks actionparsnip, that solved my question.