Wyatt Earp :
USAFRet :
Wyatt Earp :
USAFRet :
Wyatt Earp :
DelroyMonjo :
You can't clone a larger drive to a smaller capacity drive. I've been in the same situation and have just done a fresh install of Windows to the SSD, with the HDD unplugged, and used the SSD as the boot drive and the HDD as the D: or E: drive. You will still have a copy of the OS on the original drive.
I see. The only issue is that I don't have another copy of Windows available. I have a Windows 8.1 OEM disk, but I've installed that on another build of mine and upgraded my main build to Windows 10. How would I go about installing Windows 10 onto my SSD without a disk or a key for that matter?
This PC you're attempting to clone...
What OS is on it? It's not clear from your description.
The OS on the PC I am trying to clone is Windows 10.
This was Upgraded from something else?
If so, no problem.
Go here:
https://www.microsoft.com/en-us/software-download/home
Download the tool and create your install media. Either DVD or USB.
Install on the SSD.
Won't I need a key for that?
If this was Upgraded from a valid qualifying OS, then NO, you do not need a 'key'.
In the Upgrade and activation, your previous license key and some info of the hardware is your license key. This info lives in the activation servers at MS.
During the install, when it asks for the license key, click Skip.
Now...if that original OS license (Win 8.1) has also been used elsewhere, all bets are off. You can't Upgrade that license and continue to use the original license in another PC.