Error mounting /dev/sdb1 at /media/user/TOSHIBA: Command-line `mount -t "vfat" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush" "/dev/sdb1" "/media/user/TOSHIBA"' exited with non-zero exit status 32: mount: /dev/sdb1: can't read superblock