Hello, I have recently installed Ubuntu as a dual boot OS on my Samsung N150P netbook. After testing it out for a bit, I realized that the OS is simply too much for my netbook to handle.

Thus, I would like to remove it.
However, after some research, I've learned that the only way to remove it safely is by using a recovery CD.

The only problem is, my netbook doesn't have a CD drive.
What should I do?