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[guestr02]

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[Delicieuxz]

This is something you set in the BIOS, and not necessarily something you change by physically changing the order of the drives in your PC case.

 

You can look up which key to press to enter the BIOS for your motherboard online. For my motherboard, it's the Delete key.

 

 

You can also press F8 (it might be a different key depending on your motherboard and BIOS) repeatedly during your system's startup and you'll be presented with a list of your drives to choose which to boot from.

 

 

You also can change the default boot OS while in Windows 7 by following the instructions in this guide:

 

https://www.sevenforums.com/tutorials/2282-default-operating-system-change-default-boot-os.html

[wONKEyeYEs]

6 minutes ago, Rguest02 said:

the ssd with windows 7 booted first (oops)

Have you tried booting to BIOS and choosing your boot drive?

[guestr02]

35 minutes ago, wONKEyeYEs said:

Have you tried booting to BIOS and choosing your boot drive?

Yes that is what I meant by trying to boot the hdd before the ssd. I changed the boot order in the BIOS but it still booted windows 7.

 

[wONKEyeYEs]

1 hour ago, Rguest02 said:

I changed the boot order in the BIOS but it still booted windows 7.

Some MBs have a hot-pluggable option you can set for individual SATA ports.

If you don't have an external option to plug in the Win7 drive then you could 

set a SATA port to hot-pluggable and plug the Win7 drive there.

Remove only the SATA data cable for the Win7 drive.

Boot into your Win10 drive then plug in the SATA data cable to the Win7 drive.

 

Wait, I just re-read your post, why don't you just do a fresh Win10 install on the SSD that currently has Win7?