I want to use an SD card, and started your example Storage ->SD -> SD-Test. Library SD.h is included but won't compile. This message comes up repeatedly:
• Error at line 524 in file Sd2PinMap.h: ‣ #error Architecture or board not supported. ‣ SD [/home/ullix/Code/Arduino/libraries/SD] ◦ File.cpp
The package manager tells me the "SD Library" is installed as libsd-esp32, in version 1.1.7, and no update available. Looks like being the correct library?
So far I have used internal flash with both ffat and spiffs, and it worked.