$ uname -a Linux ThinkPad-X230.localdomain 3.9.6-301.fc19.x86_64 #1 SMP Mon Jun 17 14:26:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux # dmesg | grep sd [135587.413741] sd 27:0:0:0: Attached scsi generic sg1 type 0 [135587.416697] sd 27:0:0:0: [sdb] 2007040 512-byte logical blocks: (1.02 GB/980 MiB) [135587.418130] sd 27:0:0:0: [sdb] Write Protect is off [135587.418140] sd 27:0:0:0: [sdb] Mode Sense: 03 00 00 00 [135587.418944] sd 27:0:0:0: [sdb] No Caching mode page present [135587.418947] sd 27:0:0:0: [sdb] Assuming drive cache: write through [135587.423205] sd 27:0:0:0: [sdb] No Caching mode page present [135587.423211] sd 27:0:0:0: [sdb] Assuming drive cache: write through [135587.424119] sdb: sdb1 sdb2 [135587.428088] sd 27:0:0:0: [sdb] No Caching mode page present [135587.428094] sd 27:0:0:0: [sdb] Assuming drive cache: write through [135587.428098] sd 27:0:0:0: [sdb] Attached SCSI removable disk [135588.336077] SELinux: initialized (dev sdb1, type iso9660), uses genfs_contexts # mkfs.ext4 /dev/sdb1 mke2fs 1.41.12 (17-May-2010) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 245280 inodes, 979456 blocks 48972 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=1006632960 30 block groups 32768 blocks per group, 32768 fragments per group 8176 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736 Writing inode tables: done Creating journal (16384 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 20 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.