Set the boot options in your BIOS so that the computer boots from your normal drive. Then boot and press the keys (shift, esc or tab-you'll have to try) like a wild one, many many times in a row until grub menu appears.
Set the boot options in your BIOS so that the computer boots from your normal drive. Then boot and press the keys (shift, esc or tab-you'll have to try) like a wild one, many many times in a row until grub menu appears.