The DOS-on- USB tool is built to give a Windows environment for existing applications and tools on a non-intrusive manner. Most of the issues related to PC optimization and repair can be solved by repeating the same steps in the Readme. It is very easy to use and can be customized according to your needs. You just need to download this software from the Internet and save it to your USB device.
This is a free software utility written in C++ for embedded systems. It supports almost all common applications such as curses, dos, calc, Perl and Python etc. to name a few. A DOS-on- USB support will help you to recover data that has been lost due to improper partitioning or formatting. It also emulates a physical keyboard and mouse that make use of a USB port on your PC.
I found out that a person had developed a very good utility called "BD Repair", which also uses a BIOS to emulate a mouse. He said that this tool is perfect for people who are using Windows based computers that run on BIOS. The best thing about this tool is that it will work even if your PC runs on a different BIOS version. The author developed this tool because he was fed up of the difficulties he was experiencing with his Windows based system. I think he succeeded to a very good extent.