uni67berlin@fnord:/$ sudo fsck /dev/sdb1
fsck von util-linux 2.20.1
fsck.fat 3.0.26 (2014-03-07)
0x41: Dirty bit is set. Fs was not properly unmounted and some data may be corrupt.
1) Remove dirty bit
2) No action
? 1
Long filename fragment "橑ﻎ귃탽鱲���㹀ಗ���좖๝꽴줔" found outside a LFN sequence.
  (Maybe the start bit is missing on the last fragment)
1: Delete fragment
2: Leave it as it is.
3: Set start bit
? 2
Long filename fragment "橑ﻎ귃탽鱲���㹀ಗ���좖๝꽴줔" found outside a LFN sequence.
  (Maybe the start bit is missing on the last fragment)
1: Delete fragment
2: Leave it as it is.
3: Set start bit
? 2
/alterPenDrive
  Has a large number of bad entries. (472/508)
Drop directory ? (y/n)