I have an old HP Pavilion dv9000 series laptop that I've installed Ubuntu 12.04 on. The laptop is large enough to have two hard drive bays. One has one of the two original Samsung hard drives (it's the primary) and the other has a newer Western Digital Scorpio Blue hard drive. (Both are SATA II by the way.)
Before I installed Ubuntu, the Samsung drive had Windows Vista on it and I had formatted the WD drive in NTFS (it's blank right now). So when I first boot Ubuntu, it shows a 250 GB filesystem (the Western Digital drive) in my file browser. But if I click on the link, it gives me an error message saying it had a problem mounting the device.
Then if I close the file browser and reopen it, the link is gone. I've tried using GParted to find the device, but it doesn't know it's there either. The WD drive doesn't even show up in the list of drives. Is there anything else I can do to get Ubuntu to detect the device?