I have Windows 10 on HDD1 and Windows 7 on HDD2. After PC start, I can choose which system I want to boot into (it is a native bootloader, it was installed automatically during W10 installation). W10 is intended to be personal, W7 is my working system (joined to company domain etc.)
The problem is that it takes really long time to show up this bootloader and I usually restart the system to boot to the other system.
So, is it possible to somehow preselect version and then reboot system, so all this OS selection thing will be skipped, thus system startup much faster?