I have a Windows 10 64 bit Pro system, RAID 5 machine. I recently swapped out one of the older (35,000+ hours) for fresher hardware. The raid consists of four 2 TB SATA drives.
I took the old 2 TB drive home to stick in my Win 7 PRO 64 bit DVR computer to reuse as a data drive. I put it in, booted, and got no confirmation dialog from the CMOS of the new drive. It booted normally into Windows 7. The 2 TB drive? Shows up as TWO physical unallocated disks in Disk Management, one 100 GB, the other 5.4 TB. Of course I can do NOTHING with these drives in either the CMOS, (where it reports as normal, 2 TB SATA drive), or Windows. It looks like Windows is "reading" the RAID information and mounting it accordingly. Any of the options in Disk Management either are not available or fail on an I/O error. Not sure how I will clean off this drive to be useful as a simple 2 TB data drive. Any ideas? There does not appear to be a wealth of freeware to address this issue. I'm not sure if these things can be addressed easily in DISKPART without affecting the O/S bearing hard drive, (which is Disk 0). This single drive mounts and Disk 1 and Disk 2.