Hard Drives Not Showing Up?

kaboonkal

Commendable
Sep 7, 2017
3
0
1,510
I got a new SSD yesterday and installed windows 7 on it cleanly (had a SSD previously as OS drive).
I have 3 other HDD with lots of data on them.
When I use the new SSD the drives do not show up in My Computer, and in disk management they show up as unallocated.
I tried going back to the old SSD and they show up just fine with everything on them no problems at all.

What could be the issue here and how can I fix it without having to forsake all of my data on my HDDs?