Enabled AHCI, not all hdd in my computer

[Mizzhell]

So I installed win 7 on a new WD 2TB Sata3 drive, I enabled AHCI before installing. I have two hdd which I use as storage, but after the reinstall only one of them show's up in my computer. I can see the other one on device manager. Does this have something to do with the AHCI? Never enabled it before now.

Any suggestions?

Setup:
Intel i7 950
Asus Sabertooth x58
3x2GB Crusial ram

 

[Britjoe]

Go to Disk Manager and assign it a letter when I first installed my SDD it did the same thing

 

[Sardonicus]

Try Disk Management.
Right click on the drive and select Change Drive Letter and Paths...
Try adding the drive.

 

[Mizzhell]

Thanks, it worked! Just had to ad a device letter to the drive. (Stupid me for not seeing that it didn't have one)