Bought a new hard drive (from Dell) as 2nd drive for the Dell OptiPlex 960. After adding in, everything looks normal. After configuration (F2->drives->drive->choose SATA2 besides existing ones), I saw the new disk during the boot process. After the computer is up, from Device Manager->Disk drivers, I saw 2 drives: one is the existing one and the other is the new one. However I could not see the new disk from Computer. Did I miss anything? Can any gurus shed some light on it? Thanks in advance.