Installed lubunto core, went OK, but no grub menu now

[Yorvyk]

On 31/10/12 10:11, Chris Green wrote:
> On Wed, Oct 31, 2012 at 10:03:44AM +0000, Chris Green wrote:
>> I have just installed lubuntu core on an acer-aspire laptop.  There was
>> an existing Windows XP installation on the laptop.
>>
>> Everything went very smoothly, no problems at all, the installation did
>> the expected change of the Windows XP partition size to make space for
>> the lubuntu install and eveything completed as expected.
>>
>> However when I reboot the system I still just get the Windows boot
>> sequence, no sign of a Grub menu at all.  I did answer 'y' to the
>> installation question about letting grub take over the boot.
>>
>> There's no data of importance on the system so I can just start again if
>> necessary but it takes a *long* time to do the XP install so I'd prefer
>> to fix this if I can.  (I do want dual boot as I occasionally need a
>> real XP for times when XP in VirtualBox doesn't quite work).
>>
> Um, a little bit further.  If I plug the USB stick I installed from back
> in and then boot (with boot from USB) then the grub menu appears, it
> seems that I have the grub menu on the USB stick!  (Yes, it really is
> the 'installed' one as it has the Windows XP installation as one of its
> options).
>
> However the lubuntu option in grub doesn't work, I just get a black
> screen if I select it.  System is up and running, I can ping it from
> other systems on my LAN.
>
It's installed grub on the flash drive.
Try this 
https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows