Installation and starting first project

I have installed the Node.js on Windows XP in E: drive.
After installing Cordova and ionic, i’m unable to create my project. it says “ionic is not recognized as internal or external command” (ON CMD). what If i don’t have access to C: drive at all? is that the root cause of this issue?

further you can check what i have done on CMD.
Please help me out here, where i was wrong? Please refer to attached screen shot.