I wanted to install a new SSD. Intended to clone it, but my cloning software wouldn't work with it (SSD was smaller than the drive I wanted to clone). So I used Paragon to copy my boot partition to the drive (after I made it active). I then tried to boot from the SSD (using BIOS settings). Hung up. I then disconnected the primary boot drive and tried to boot. Hung up again. I ran Win 7 repair from the Windows disk three times. The first time, no problems found. The second time, it fixed something, but I couldn't tell what. Third time, no problems found. Tried to boot from the SSD. No luck again. So, I reconnected the original boot drive and rebooted. Got the dual boot menu. And one of the dual boot options allowed me to boot off the SSD. I'm running off the SSD with no problems when I use the dual-boot option, but it still won't boot only from the SSD (if I set it primary boot in BIOS or disconnect the original hard drive). I can obviously use MSCONFIG to remove the original hard drive from the dual-boot option but I fear if I do that, I won't be able to boot from anything. So, for now, I'm using dual-boot to successfully boot up to my SSD. Any suggestions on how I might be able to get back to single boot off the SSD, so I can wipe the other drive and use it for backup storage?