When I wanted to check the external disk appeared this message and stopped working
C:\Windows\system32>Chkdsk E:
The type of the file system is NTFS.
Volume label is FreeAgent Drive.
WARNING! F parameter not specified.
Running CHKDSK in read-only mode.
CHKDSK is verifying files (stage 1 of 3)...
0 percent complete. (0 of 35328 file records processed)
Attribute list entry with type code 144 in file 9 is corrupt.
Attribute list entry with type code 160 in file 9 is corrupt.
Attribute list entry with type code 176 in file 9 is corrupt.
Attribute record (144, $SII) from file record segment 9
is corrupt.
Attribute record (160, $SII) from file record segment 9
is corrupt.
Attribute record (176, $SII) from file record segment 9
is corrupt.
35328 file records processed.
File verification completed.
8 large file records processed.
Errors found. CHKDSK cannot continue in read-only mode.
C:\Windows\system32>Chkdsk E:
The type of the file system is NTFS.
Volume label is FreeAgent Drive.
WARNING! F parameter not specified.
Running CHKDSK in read-only mode.
CHKDSK is verifying files (stage 1 of 3)...
0 percent complete. (0 of 35328 file records processed)
Attribute list entry with type code 144 in file 9 is corrupt.
Attribute list entry with type code 160 in file 9 is corrupt.
Attribute list entry with type code 176 in file 9 is corrupt.
Attribute record (144, $SII) from file record segment 9
is corrupt.
Attribute record (160, $SII) from file record segment 9
is corrupt.
Attribute record (176, $SII) from file record segment 9
is corrupt.
35328 file records processed.
File verification completed.
8 large file records processed.
Errors found. CHKDSK cannot continue in read-only mode.