Formating fat partition probably solve this issue. Check u-boot thread [...]
#backup MyDocs (if needed) #cp -r MyDocs/ MyDocs_backup root umount /home/user/MyDocs #if 'device is busy' use: #lsof /home/user/MyDocs #kill mkfs.vfat /dev/mmcblk0p1 #reboot to remount, or mount /dev/mmcblk0p1 /home/user/MyDocs -o rw,noauto,nodev,noexec,nosuid,noatime,nodiratime,utf8,uid=29999,shortname=mixed,dmask=000,fmask=0133,rodir exit #roll backups back #cp -a MyDocs_backup/. MyDocs #You will get a lot of: "cannot preserve ownership of XXX #Operation not permitted" (because copying from ext to fat)