I had downloaded the Ubuntu 12.10 Desktop Iso file and used the USB installer provided at pendrivelinux.com to boot from the USB device. I cannot install Ubuntu from windows as I am having some network issues in connecting from windows.
When the system is restarted using the USB Device as the primary boot option, I am able to use the " Try the Ubuntu" option. But when I click Install Ubuntu, it selects the available network and restarts.
It just shows me the error " There is no boot sector in USB " and logins into the windows screen.
Please help me in solving this issue.