I have Ubuntu installed along with Windows XP through Clone CD VCD Demon. Earlier it was working fine but after 2 months, i'm not getting the Dual Boot Option ( OS Selection Screen ) therefore i'm not able to login into Ubuntu, but my system shows that Ubuntu is still there. Can anybody help me out to clear this issue? Thanks in Advance.
Grub, Ubuntu's bootloader, seems to have been removed for some reason.
Boot with a Ubuntu Live CD.
Run the following commands from a Terminal:
Click on the "Recommended repair" button, and reboot.
Boot-Repair installed Grub to your internal hard drive. This allows you to choose which OS to boot when you start up your computer.
You must have the Ubuntu live CD.
Boot from it, fire up a terminal and enter the following command -
Then follow the on-screen instructions and after the installation finishes, enter this command -
Reboot and enjoy. All the best.
Maybe your Grub instalation was removed. To get dual boot option back, you need to install a boot manager, for example, Grub2, Lilo or Burg.
To get Grub back you can try Boot Repair: