Unassigned partition with only the option to delete

I've just installed windows 7 onto my ide hard drive with my sata as a secondary. My sata used to be primary and was the only hard drive I had; now that I've restarted my computer my sata drive no longer shows an assigned letter but looks like it still has the data.
In Disk Management it shows that the sata has a healthy primary partition, but I am given no other options but to delete it. How am I supposed to get that data back?
 
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