I have a new HP laptop. I have deployed windows 8.1 & ubuntu 15. Recently I removed ubuntu 15 and deployed ubuntu 10.04. Installation have been completed successfully. But after restarting the system I can not boot either windows or ubuntu. It is showing GNU GRUB version 2.02~beta2-29 Minimal BASH-l ine.
You should just boot into the system from live CD /USB , write/install and update grub on all the hard drives or just on the drive where both windows and Ubuntu reside.
Boot to a live try Ubuntu session, then run the following at a terminal prompt:
a) sudo mount /dev/sdaX /mnt # Make "sdaX" the partition that has Ubuntu install (i.e. /dev/sda2) b) for i in /sys /proc /run /dev; do sudo mount --bind "$i" "/mnt/$i"; done c) sudo chroot /mnt d) update-grub e) if no errors skip this "e" section grub-install /dev/sdX (sdX is the hard drive that has linux installed (i.e. /dev/sda) update-grub 5) Reboot the system
Find Linux Installation
In a terminal, run the command
df -h and look at the output. The column headed "Mounted On" will have a "/" against the partition that holds your root filesystem. This is where your system is installed.
If there is some logical volume displayed then use
lvdisplay , this will show the volume group in which that logical volume reside , then use
pvdisplay to find out on which drive the volume group reside