Migrated to SSD - Windows thinks old HDD is still there!

So, migrated to Crucial SSD in wife's laptop, no problem.

Boots in seconds - however when starting system restore, it thinks the old HDD is also still there.
It is in configure, the new SSD is there fine, but it also shows the old HDD.

I try to delete system restore on the old HDD in configure. Get an error, say OK and back to system restore, only SSD showing. Create restore point successfully.

Reboot, go to system restore, same as above.

So I can clear it, but every reboot it returns.

Any help gratefully received.

Thanks,
Paul.

An update. The old HDD has now disappeared from System Restore, and I have done nothing!!!