Ubuntu LTS 14.04 installation and basic usage

Install Ubuntu LTS 14.04 to an old Dell laptop with LTS 12.

Ubuntu LTS14.04  was written on a DVD.

The installation asks for internet connection, but gave option to upgrade LTS v12. I was asked to enter username and password. Presumable the old directory will be over-written? (No, this was not the case. Old directory was kept there. )

Near the end of the installation, a warning saying that some application need to reinstalled. Then it asked for restart.

Somehow, the language was set to Chinese.  I figure out that "shift" can switch between language input modes.