elhoir@elhoir-laptop:~$ dmesg | grep sda
[    2.545451] sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/465 GiB)
[    2.545505] sd 0:0:0:0: [sda] Write Protect is off
[    2.545508] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    2.545529] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    2.591044]  sda: sda1 sda2 sda3 sda4 < sda5 >
[    2.591842] sd 0:0:0:0: [sda] Attached SCSI disk
[    3.667908] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)
[   24.831603] Adding 4844540k swap on /dev/sda5.  Priority:-1 extents:1 across:4844540k FS
[   25.511361] EXT4-fs (sda3): re-mounted. Opts: errors=remount-ro,user_xattr
[  584.069317] EXT4-fs (sda4): unable to read superblock
[  584.071955] EXT4-fs (sda4): unable to read superblock
[  584.080774] EXT4-fs (sda4): unable to read superblock
[  584.087179] FAT-fs (sda4): bogus number of reserved sectors
[  584.087186] FAT-fs (sda4): Can't find a valid FAT filesystem
[  584.139451] XFS (sda4): Invalid superblock magic number
[  584.155094] FAT-fs (sda4): bogus number of reserved sectors
[  584.155102] FAT-fs (sda4): Can't find a valid FAT filesystem
[  584.199198] sda4: rw=16, want=3, limit=2
[  584.212556] hfs: can't find a HFS filesystem on dev sda4
[ 4836.489405] EXT4-fs (sda4): unable to read superblock
[ 4836.491802] EXT4-fs (sda4): unable to read superblock
[ 4836.503348] EXT4-fs (sda4): unable to read superblock
[ 4836.515936] FAT-fs (sda4): bogus number of reserved sectors
[ 4836.515943] FAT-fs (sda4): Can't find a valid FAT filesystem
[ 4836.545483] XFS (sda4): Invalid superblock magic number
[ 4836.558507] FAT-fs (sda4): bogus number of reserved sectors
[ 4836.558514] FAT-fs (sda4): Can't find a valid FAT filesystem
[ 4836.581562] sda4: rw=16, want=3, limit=2
[ 4836.615434] hfs: can't find a HFS filesystem on dev sda4
elhoir@elhoir-laptop:~$