gonarip :
Hi. I just installed a second ssd drive but my system does not recognize it. I am new at this and i need to know what to do to set it up. I have window 7 and an asus p8p67 deluxe motherboard. I already have 2 other drives.
Every time you plug in a new internal drive, you need to partition and format it before it's visible in Explorer.
Disk Management is the tool. There are several ways to start it, but the one mentioned by LiveBriand is faster than most
Just bring up Run and run diskmgmt.msc.
In Disk Management you will see every hard drive and every optical drive in your PC. The new drive should be there too. If it's not, then you have other problems, and need to go looking in Device Manager, etc.
Click on the new drive and create a new partition. A Basic partition is fine, and normally you'll want to put all the space into a single partition. Then format the partition, but make sure you choose QUICK Format (slow format will waste time writing to the drive). Once the format completes the partition will have a drive letter, and should appear in Explorer.