I am using both XP and ubuntu in 2 separate hard drive in the same pc. Couple of days ago i have installed XP in the secondary hard drive. I dont know why but after that I couldnt mount or see inside my drives where the xp is installed from ubuntu. Then I found help in ubuntu forum.http://ubuntuforums.org/showthread.php?t=603
I am just explaining what I have done:
opent terminal
tareq@User: sudo mount -t ntfs-3g /dev/disk/by-label/drive_name /media/a_directory/ -o force
If the directory is not created in media directory you have to create it first. with the command
tareq@User: sudo mkdir /media/a_directory
then run the above command
hope this works