It is in the first time you start Recalbox that it creates the SHARE partition, if you have not wait to complete the process, that's exactly what happens.
Ohhhh.... ohh.
After I flashed RecalBox using etcher, I wondered myself, why the ReaclBox partition was so small and I increased the partition size manually using parted... I did not assume RecalBox would alter the partition table on first start. I gonna try another time. Thanks so far
