Ubuntu
grub2 package

error no such device - grub rescue

Asked by mark harris

hello all
i installed ubuntu netbook edition 9. something and i installed it through windows.
and now ive restarted it it will no longer boot windows or linux
all it says is

error: no such device: b21012e7-ae74-4805-98c1-bb0beae0eb9a
grub rescue>

ive installed the universal usb installer from the website and sellected the iso file
and ive plugged in the usb and found out how to sellect the computer to boot from usb and it says cannot find os.

i tried some words that the command line accepts. it either goes unknown command or unknown file system

HELLLPPPPP
What should i do???

thanks mark :)

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Ubuntu grub2 Edit question
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mark harris
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marcobra (Marco Braida) (marcobra) said : 		#1

Please reinstall grub booting from the usb stick... by selecting at boot try Ubuntu without install

https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows

Revision history for this message
mark harris (marcharris2008) said : 		#2

hello ive booted ubuntu netbook 10.04 live and i cant figure out what action to take to restore my origial boot settings
could you help??
thanks

Revision history for this message
mark harris (marcharris2008) said : 		#3

i typed in termal
grub-install -v
and it comes back with

grub-install (GNU GRUB 1.98-lubuntu5)

Revision history for this message
mark harris (marcharris2008) said : 		#4

i typed in

sudo update-grub2

and it comes back with

/usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?).

Revision history for this message
delance (olivier-delance) said : 		#5

Boot with Ubuntu CD, with option "Try but not install" and type commands
    sudo parted -l
    sudo blkid
    sudo more /boot/grub/grub.cfg