Icasper

thanks to you guys, i have my system winxp running, your right guys the partition was hidden and i was able to unhide using the unhide, but before that i was a newbie and not able to do grub thing... so to give a step to other newbie like me, if your ubuntu is working properly and winxp is display an error like autochk blahblah... first boot to Ubuntu then locate the Root Terminal to open the grub, once in the root terminal type "grub", grub prompt open then type "unhide (hd0,0)" follow the instruction given by muppet, another tip is that while not finishing the word unhide, try clicking the Tab key, this is a good help and for hd0....hope this helpppp to newbies like me..