PS/2?
Maybe, however, think about another option - that is, automatic installation

Or actually installing on a second laptop.
I use Linux for such things, I manually fire up virtualization which allows you to point the entire disk as a block device. Disk with such an installed system can be connected directly to another computer and run.
I need a Linux distribution - live is enough, it can be Knoppix, an image of the system for installation in ISO form.
From the console issue the command as root:
Quote: kvm -m 1024 --cdrom /directory/file.iso --boot d /dev/sda
I have typed from memory not sure if error-free.
This is an example where /dev/sda is our drive we want to install the system on so it's a good idea to see what you are doing and not plow the one you are working on.