My old data drive (D was going bad so I bought a 5 TB Toshiba drive to replace it. I plugged it into an external caddy and formatted it to a single GPT partition. I copied over the data I needed and then powered down removed the bad drive and installed the new drive.
When I rebooted the BIOS sees the enw drive but Windows, Disk Management, and Device Manager do not. It is Windows 7 system.
I switched the SATA cables between my boot (C drive and the new drive to see if it was a bad cable or onboard controller. In each case, Windows sees the C drive so its not a cable issue. If I take the drive out and plug it into the USB-3 external caddy (EZ-Dock 2) it reads it fine. However, plugged in as an internal drive the system can't see it.
When I rebooted the BIOS sees the enw drive but Windows, Disk Management, and Device Manager do not. It is Windows 7 system.
I switched the SATA cables between my boot (C drive and the new drive to see if it was a bad cable or onboard controller. In each case, Windows sees the C drive so its not a cable issue. If I take the drive out and plug it into the USB-3 external caddy (EZ-Dock 2) it reads it fine. However, plugged in as an internal drive the system can't see it.