I have installed the Ubuntu 12.04 LTS using a pen drive. Firstly I made pendrive into a bootable USB drive which includes Ubuntu .iso file extraction. After using that USB drive in my other laptop and installed on it, I am trying to make my USB drive for using other transfers. But it is not detected by my laptop afterwards. Therefore, neither I am able to use that for other stuffs nor it gets unbootable..
So, give me solution.