I was looking to double boot my lappy to get some Linux based operating system, but the boot menu just does not open..... No matter what I press, F12, F2, F10, Del, the boot menu never shows up... Whats more, when i press the F12, it gives a loud BEEP as many times i press F12....... Then it just directly goes into starting the windows. Offcourse this clearly is the UEFI mode, but without access to Boot Menu, how will i change it to Legacy?..... I thought i was pressing thw wrong button, but when my Lappy starts up, it dows not show any buuton for boot menu below "Toshiba" title..... The very next thing that happens is Windows loads..... Please help to get the Boot Menu.....