Thx Laurent. That wasn't my problem. I installed SM OS easily and it booted up fine. It was the total ignorance of how to get my A7R fully operational that flummoxed me. It recognized my Sony A7R but I couldn't do anything. It was lack of Sony support in ASIair that drove me to try SM OS. I still have two cameras that I wish I could use - a full spectrum Sony 7R and an Altair Hypercam 174 (which has a fan, not cooler). If it was easy I would convert my Pro RP4 to SM OS and run my new ASIair Plus with its cameras (I have 4!) and a astro modded Canon 6D. I have no experience with Indi, KStars, etc. That's what stopped me cold.

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