You need to format the SD card from within the CMM EBF prompt, while it is still inside the midplane.
Use the command 'sd format' - that will format it correctly. Then you will need to do a CMM firmware recovery.
You may need to contact Intel technical support for help with these steps.
Thanks for your reply!
Iis there a documentation available for the CMM firmware recovery, or is the Intel support the only option?
I tried to format the sd card with that command within the CMM EBF, but it says "Top Level command sd not understood"
There is no documentation available for firmware recovery - Intel support is your best option.