Installed Free Backup 10. Reads C:\ and external hard drive just fine. Doesn't read secondary WD2500JB internal hard drive. Machine sees drive and has no problem accessing it. The drive checks out. NTFS file system. Device Manager says it's fine and "working properly". Paragon says "File system Invalid". Paragon cannot see it. Notice that the WDC drive is red and says invalid. Why can't Paragon see this drive? Any help here is most appreciated. I sent an attached screen shot. I didn't know how to put it in here.