Installing MacOS 10.6, get splash screen image I don't recognize
Hello there, I'm trying to do a clean install of MacOS 10.6 on a new internal SSD drive. Using my prior HDD startup drive, I can see my new SSD drive and I have formatted it in Mac OS Extended (journaled). I then put in my 'install 10.6' optical disc and it successfully sees the new SSD drive and lets me start an OS install. However, sometime in the process of install, the Mac reboots and then gives me splash screen I have never seen before. I have attached the picture below. It seems like the splash screen is asking me to do something but I can't tell what it is. Does anyone know what this picture means? At this point in the process, the computer just hangs.
System:
MacPro 5.1
Quad Core Intel Xeon
2.8Ghz
8GB Ram
New SSD drive:
Crucial MX500 2000GB
Thanks! Tom
Mac Pro, macOS 10.13