[17:03] pierre@lamchelou:/media/sdb1 > dmesg |tail -20
[ 6003.242545] FAT-fs (sdb): invalid media value (0xb9)
[ 6003.242553] FAT-fs (sdb): Can't find a valid FAT filesystem
[ 6003.242915] FAT-fs (sdb): invalid media value (0xb9)
[ 6003.242928] FAT-fs (sdb): Can't find a valid FAT filesystem
[ 6003.259275] ISOFS: Unable to identify CD-ROM format.
[ 6003.302002] FAT-fs (sdb1): bogus number of reserved sectors
[ 6003.302016] FAT-fs (sdb1): Can't find a valid FAT filesystem
[ 6003.316956] FAT-fs (sdb1): Unrecognized mount option "utf8" or missing value
[ 6003.348264] ISOFS: Unable to identify CD-ROM format.
[ 6003.615476] FAT-fs (sda3): invalid media value (0x9f)
[ 6003.615485] FAT-fs (sda3): Can't find a valid FAT filesystem
[ 6003.628450] FAT-fs (sda3): Unrecognized mount option "utf8" or missing value
[ 6003.640524] isofs_fill_super: bread failed, dev=sda3, iso_blknum=16, block=32
[ 6003.662275] EXT3-fs (sda3): error: unable to read superblock
[ 6003.693559] EXT4-fs (sda3): unable to read superblock
[ 6003.694317] FAT-fs (sda3): invalid media value (0x9f)
[ 6003.694328] FAT-fs (sda3): Can't find a valid FAT filesystem
[ 6003.694911] FAT-fs (sda3): invalid media value (0x9f)
[ 6003.694922] FAT-fs (sda3): Can't find a valid FAT filesystem
[ 6003.695347] isofs_fill_super: bread failed, dev=sda3, iso_blknum=16, block=32