Everyone, I'm a new comer to Ubuntu. Recently, I downloaded the Ubuntu Desktop 12.10 (64 bit) ISO file. After verifying that the file is not damaged or corrupted, I install it on a 4 GB Sandisk pen drive using Universal USB installer. After booting Ubuntu from pen drive, it automatically reboots every time when I boot it from the pen drive. It dont give me any chance to install it.
I don't know why it is happening? Please help me