You are saying you made this disk under Windows XP, there is NO WAY in windows XP to format a DISK (and not a partition) with NTFS, so you MUST HAVE A PARTITION ON IT. If you dont, you nuked it.
First you make everyone focus on what your friend calls in a different linguistic approach "nuked" - which is exactly what we all here tried to tell you since you posted your output of 'fdisk -l'.
If you printed it intentionally or involuntarily wrong does not make any difference from a technical viewpoint, we have to rely on the info provided as it is given.
The missing bit of info was (mis)leading into a totally different direction and priority.
You gave the impression that a "nuked" partition table was at the root of the matter, and not how to possibly mount an invisible partition.
I mean do you honestly think I posted over 22 posts in a 24-hour period because I'm bored and wanted to hide things from you. Give me a break.
An attitude of such selfishness when you see people trying to help you over a thread of so far 32 posts, stressing
your investment of time and energy rather than that of those who try on a voluntary base and unpaid for such to help you to the best of their ability in combination with hints of hostility and rudeness will not get you far anywhere where free tech support is provided out of a purely idealistic motivation.
Like gerald_clark said, I am also happy that you now have it working (and even more that it appears that there is nothing wrong with your disk).
Remains the partition table of your /dev/sda which in accordance to the language of your friend appears to be "semi-nuked", I have already pointed to 'testdisk' to attempt to fix that.