I suspect the problem is that the 1TB drive was formatted in XP. Read this rather lengthy discours about the possible problem. I would reformat it with Partition Wizard bootable CD.
Did a full Win 7 format and no luck.
Downloaded and used active@ killdisk hard drive eraser, and then the disk is now good to go.
The Intel Matrix Storage Raid Manager now shows the drive as a "non-raid disk" at start-up, rather than an "off-line member", which was probably the cause of the problem!
- Click on the Start
- Right click on Computer and select Properties.
- Then select the Device Manager which is displayed at the upper left corner of the screen.
- Now, click the little triangle and explore the category of Disk Drive.
- Right click on your specific drive and select Properties.
- Navigate to the Policies tab.
- If you find an option of Optimize for Quick Removal or something similar to it, then uncheck that option or turn it off.
Computer Management (Local) - Storage - Disk Management
on the bottom half of the screen does your RAID setup show? Might be listed as RAW or Unallocated.
If it shows up, it either needs formatting and/or a drive letter assigning.
If it doesn't appear, then being a new install of Windows 7 you're probably just lacking the RAID drivers to see it.