Es lo que ME HAN RECOMENDADO los berzas estos.
De todas formas, también me han dicho de hacer un telnet y una serie de diagnósticos, y el resultado es:
12-12 17:56:14.690 D/MediaScannerReceiver( 581): action: android.intent.action.MEDIA_UNMOUNTED path: /storage/udisk0
12-12 17:56:14.693 I/fsck_msdos( 128): ** /dev/block/vold/8:1
12-12 17:56:14.695 I/cat ( 4093): <3>[11000.408603@0] sd 1:0:0:0: [sda] No Caching mode page found
12-12 17:56:14.695 I/cat ( 4093): <3>[11000.408642@0] sd 1:0:0:0: [sda] Assuming drive cache: write through
12-12 17:56:14.696 I/fsck_msdos( 128): Unknown file system version: 74.70
12-12 17:56:14.696 I/fsck_msdos( 128): fsck_msdos terminated by exit(2)
12-12 17:56:14.697 E/Vold ( 128): FAT check failed (not a FAT filesystem)
12-12 17:56:14.697 W/Vold ( 128): /dev/block/vold/8:1 does not contain a FAT filesystem
12-12 17:56:14.702 I/ValidateNoPeople( 427): skipping global notification
12-12 17:56:14.707 I/cat ( 4093): <5>[11000.421789@0] sd 1:0:0:0: [sda] Attached SCSI disk
12-12 17:56:14.711 I/fsck.exfat( 128): exfatfsck 0.9.5
12-12 17:56:14.717 I/fsck.exfat( 128): fsck.exfat terminated by exit(2)
12-12 17:56:14.718 E/Vold ( 128): exFAT check failed (not a EXFAT filesystem)
12-12 17:56:14.718 W/Vold ( 128): /dev/block/vold/8:1 does not contain an Exfat filesystem
12-12 17:56:14.724 I/Ntfsfix ( 4124): Mounting volume...
12-12 17:56:14.759 I/Ntfsfix ( 4124): OK
12-12 17:56:14.759 I/Ntfsfix ( 4124): Processing of $MFT and $MFTMirr completed successfully.
12-12 17:56:14.759 I/Ntfsfix ( 4124): NTFS volume version is 3.1.
12-12 17:56:14.759 I/Ntfsfix ( 4124): NTFS partition /dev/block/vold/8:1 was processed successfully.
12-12 17:56:14.764 I/Vold ( 128): NTFS check completed OK
12-12 17:56:14.840 E/ ( 4125):
The disk contains an unclean file system (0, 0).
12-12 17:56:14.840 E/ ( 4125): Metadata kept in Windows cache, refused to mount.
12-12 17:56:14.842 E/Ntfs-3g ( 4125):
Failed to mount '/dev/block/vold/8:1'
12-12 17:56:14.842 E/ ( 4125):
The NTFS partition is in an unsafe state. Please resume and shutdown
12-12 17:56:14.842 E/ ( 4125):
Windows fully (no hibernation or fast restarting), or mount the volume
12-12 17:56:14.842 E/ ( 4125):
read-only with the 'ro' mount option.
12-12 17:56:14.844 I/ntfs-3g ( 128): ntfs-3g terminated by exit(14)
12-12 17:56:14.844 W/Vold ( 128): /dev/block/vold/8:1 failed to mount via NTFS (Success).
12-12 17:56:14.844 E/Vold ( 128): Volume udisk0 found no suitable devices for mounting
12-12 17:56:14.844 D/Vold ( 128): Volume udisk0 state changing 3 (Checking) -> 1 (Idle-Unmounted)
12-12 17:56:14.844 W/Vold ( 128): Returning OperationFailed - no handler for errno 0
12-12 17:56:14.845 D/MountService( 427): volume state changed for /storage/udisk0 (checking -> unmounted)
12-12 17:56:14.845 I/PackageManager( 427): Updating external media status from unmounted to unmounted
12-12 17:56:14.845 W/MountService( 427): Insertion mount failed (-1)
12-12 17:56:14.845 D/MountService( 427): sendStorageIntent Intent { act=android.intent.action.MEDIA_UNMOUNTED dat=file:///storage/udisk0 flg=0x4000000 (has extras) } to UserHandle{-1}
12-12 17:56:14.851 D/ExternalStorage( 2330): After updating volumes, found 1 active roots
12-12 17:56:14.855 D/MediaScannerReceiver( 581): action: android.intent.action.MEDIA_UNMOUNTED path: /storage/udisk0
12-12 17:56:54.877 I/cat ( 4093): cat terminated by signal 2
Es raro esos errores...¿quizás por no quitar el disco con seguridad desde Windows?