Hello, sorry it's not the SD auto detect, it's the USB auto detect and auto mount, that feature is really importante if you use your pi and wan't to simply change content or program data with a new USB stick/pen.

Hello,

Almost two years ago I made something similar to my Pi but I lost the SD auto detect and auto mount, can you please tell me if you have the SD Auto detected functionality working while in read-only mode?

Best regards