How can I dual boot with 2 harddrives?

[cooldudekalia100]

Ok, so I am "renovating" my old pc since it has a very bad cpu, video card and not the best motherboard. It came with a 1.0TB harddrive which my dad downloaded windows 7 on, and has lots of files like photos, videos and documents. What I want to do is get a 250gb SSD, so that I can install windows 10 on it and only use it for games and school files. So my question is, How can I make it so when I startup my pc, It greets me with a message saying, "Which storage device do you want to boot off", and so when I wanna play games and do school stuff, I can boot off my SSD, and when my dad has to use his files he can boot them off the HDD?

 

[190221]

just install windows 10 to the ssd (will probably show up as disk 1 (presuming the numbering starts at 0 and you have two drives(although it may not, i've never used the windows 10 install system))--it should be obvious which is which because of the size difference.

https://www.kapilarya.com/how-to-make-clean-install-of-windows-10
Steps 6 and 7 will be useful to you
pick the ssd from the list and make sure not to accidentally format the hdd.
then continue, when its installed and you reboot you will get a prompt to choose your OS or if you wait 30 or so seconds it will automatically boot to 10.

 

[USAFRet]

MERGED QUESTION
Question from cooldudekalia100 : "How to boot of a specific harddrive?"

Ok, so I am planning to buy an SSD so that I can use it for playing games and doing school work. I already have a 1TB HDD, but I am not using it since it is very slow and not as good as an SSD. So my question is, How can I make it so that when I boot up my computer, it greets me with a sign saying, "What storage device do you want to boot off? HDD or SSD." So that I can use my SSD to play games and my dad can use his HDD?

it doesn't quite work that way.

I suggest you put your ssd in a usb 3.1 enclosure and boot from it using F10 (boot menu) select usb boot.

having 2 hard drives with O/S, especially when you have the same O/S internally if you make a mistake during your prep work you can wipe and destroy your father Hard drive's data.... .

So I cannot take th responsibility than suggest get an usb enclosure.

the complete answer lies in the process in which you take to generate the o/s on the SSD separately
then add the drive into the system, and press F10 to select HDD to boot...

The Paladin, could i just change the boot order for the SSD before the hdd in the bios of my computer when I have to use the SSD and when I have to use HDD i set it before?

 

[USAFRet]

There are two ways to do this. It depends on exactly how you wish to choose which drive to boot into.

1. Choose in the BIOS boot menu:
Disconnect HDD
Install your OS on the SSD
At power up, interrupt the boot process and select which drive to boot from.

2. A menu, which defaults to one or the other.
Leave the HDD connected
Install on the SSD
This will merge the boot options onto the boot partition on the current HDD
At power up, you should be presented with a menu that looks like this: