Two W10 drives

I just got a new DELL with a single HDD. I would like to take the system drive from my old HP Pavilion and install it as a second drive in the DELL (The drive is a very nice new WD). When I first boot up, the PC will see two system drives.

1. Will this cause a problem?
2. How can I make the added 2nd drive non-system?
3. If I follow the answer to question 2 above, what changes do I have to make to my boot stuff?

Sorry that my terminology may be off ("boot stuff"), but I don't know the correct words.

Thanks for any plain English answers,

Press F2 (or F10 or whichever is) when you switch on your computer to enter BIOS. Then look for boot priorities. Since you have two hard disks, there should be a hard disk priority setting. Make sure the new disk is second on the list, so your computer will try to boot from your original disk first.

spapakons said:

Press F2 (or F10 or whichever is) when you switch on your computer to enter BIOS. Then look for boot priorities. Since you have two hard disks, there should be a hard disk priority setting. Make sure the new disk is second on the list, so your computer will try to boot from your original disk first.

Can I simply reformat the 2nd drive or will that screw things up?

Thanks for your previous help.

mangurian said:

Can I simply reformat the 2nd drive or will that screw things up?

Thanks for your previous help.

You can, but you'd have to get it in the machine first; otherwise, obtain a sata to usb adapter and format it from 'outside' the machine.
Best to follow spapakons's suggestion and format it after it's in the machine.