Finally, found out whats wrong, using check-disk in Gparted, Gparted offered to correct the damage but will and cannot correct it because of the discrepancy. With the SD is physically nothing wrong but changes cannot be made because of the difference,
No idea how I did this. Anybody?
Following a part of the translated message:
The logical disk-building(1890,4,8192) mentioned in the file-system is invalid. The Build stored in the disk label is (121494,255,2)(cylinders,heads,sectors)
I’ll later gonna try bootsector.img as Chewitt suggested, already downloaded. Thanx4that.