Laptop will not start with the hard disk in place'

You need to get into the machine bios to check these settings, the bios can be entered only at the point just after you first turn the machine on and it is doing system checks on the a Dos screen. Usually if you press delete or escape then this takes you into the bios. Though we think on the toshiba that you may have to boot the machine up and hold down the?Esc? key, then press F1 when you get the check system message. You are then in the BIOS Setup. Have a look around in here and you will find which drive is being used as you bootable disk.