I have 2 systems, a Dell 755 desktop & an Acer 5515 laptop. Both have 500gb drives with Windows 7 dual booted with Ubuntu 12.04. Made DVD from ISO and installed 14.04 into Dell system. At install menu it said that it detected multiple operating systems and the 1st option was to install along side Windows in dual boot. Chose that option and 14.04 installed no problems on the Dell 755 Desktop.
Then tried to install 14.04 onto the Acer system
At install menu it said it detected multiple systems but no option to dual boot. All options were to basically format the drive and only install Ubuntu. Both systems had more than enough space to install 14.04 so why does the 14.04 install DVD only do a dual boot install on the 755 but refuses to install dual boot on the 5515.
Unfortunately, I'm not savvy enough to install 14.04 manually into the 5515 as a dual boot setup.