I am trying to install Ubuntu 12.04 but every time I try to install it I get an error the error says. Error informing the kernel about modifications to partition /dev/sda1 - device or resource busy. This means Linux won't know about any changes you made to /dev/sda1 until you reboot- so you shouldn't mount it or use it in anyway before rebooting. The pop up window has an ignore button and cancel button but I cant get out of the window I have to restart the computer. Has anyone seen this issue before?