Have 3 Macs that I have been working on upgrading to 10.9 from 10.8. Two of them have SSDs in them that came from Apple. The 3rd has a 3rd party Intel SSD in it. I did not have any issues installing 10.8 on that last year and I can boot into 10.8 fine. When I boot on the USB installer I used for the other two Macs, the installer can't see the SSD. If I boot into the 10.8 Recovery, I can see it fine. Any ideas?