Ok woody14619, At root just typed "mount". Code: /dev/mmcblk1p1 on /media/mmc1 type vfat (rw,noauto,nodev,noexec,nosuid,noatime,nodiratime,utf8,uid=29999,shortname=mixed,dmask=000,fmask=0133,rodir)
/dev/mmcblk1p1 on /media/mmc1 type vfat (rw,noauto,nodev,noexec,nosuid,noatime,nodiratime,utf8,uid=29999,shortname=mixed,dmask=000,fmask=0133,rodir)
umount /dev/mmcblk1p1 sfdisk /dev/mmcblk1 <<EOF ,,c EOF sync mkfs.vfat /dev/mmcblk1p1 sync sfdisk -d /dev/mmcblk1