linusfr@ubuntu:~$ sudo -i
[sudo] password for linusfr:
root@ubuntu:~# dd if=/home/linusfr/Desktop/aboot.img of=/dev/sdb1
2048+0 records in
2048+0 records out
1048576 bytes (1.0 MB) copied, 0.0800131 s, 13.1 MB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/laf.img of=/dev/sdb14
dd: writing to ‘/dev/sdb14’: Input/output error
7145+0 records in
7144+0 records out
3657728 bytes (3.7 MB) copied, 20.5828 s, 178 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/laf.img of=/dev/sdb13
dd: writing to ‘/dev/sdb13’: Input/output error
3841+0 records in
3840+0 records out
1966080 bytes (2.0 MB) copied, 18.2121 s, 108 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/laf.img of=/dev/sdb12
dd: writing to ‘/dev/sdb12’: No space left on device
3+0 records in
2+0 records out
1024 bytes (1.0 kB) copied, 0.264439 s, 3.9 kB/s
root@ubuntu:~# dd if=/dev/zero of=/dev/block/platform/mmcblk0p24
dd: failed to open ‘/dev/block/platform/mmcblk0p24’: No such file or directory
root@ubuntu:~# ^C
root@ubuntu:~# dd if=/home/linusfr/Desktop/aboot.img of=/dev/sdb5
2048+0 records in
2048+0 records out
1048576 bytes (1.0 MB) copied, 1.76484 s, 594 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/aboot.img of=/dev/sdb24
2048+0 records in
2048+0 records out
1048576 bytes (1.0 MB) copied, 1.66319 s, 630 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/laf.img of=/dev/sdb24
dd: writing to ‘/dev/sdb24’: Input/output error
6617+0 records in
6616+0 records out
3387392 bytes (3.4 MB) copied, 5.14111 s, 659 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/aboot.img of=/dev/sdb24
dd: writing to ‘/dev/sdb24’: Input/output error
1993+0 records in
1992+0 records out
1019904 bytes (1.0 MB) copied, 5.12436 s, 199 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/aboot.img of=/dev/sdb24
2048+0 records in
2048+0 records out
1048576 bytes (1.0 MB) copied, 1.76877 s, 593 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/aboot.img of=/dev/sdb5
2009+1 records in
2009+1 records out
1028776 bytes (1.0 MB) copied, 1.70584 s, 603 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/laf.img of=/dev/sdb24
dd: writing to ‘/dev/sdb24’: Input/output error
6609+0 records in
6608+0 records out
3383296 bytes (3.4 MB) copied, 5.12452 s, 660 kB/s
root@ubuntu:~# dd if=/home/linusfr/Desktop/laf.img of=/dev/sdb24
dd: writing to ‘/dev/sdb24’: Input/output error
1137+0 records in
1136+0 records out
581632 bytes (582 kB) copied, 0.780693 s, 745 kB/s
root@ubuntu:~# e2fsck -n /dev/block/platform/mmcblk0p24
e2fsck 1.42.9 (4-Feb-2014)
e2fsck: No such file or directory while trying to open /dev/block/platform/mmcblk0p24
Possibly non-existent device?
root@ubuntu:~# e2fsck -n /dev/sdb24
e2fsck 1.42.9 (4-Feb-2014)
ext2fs_open2: Bad magic number in super-block
e2fsck: Superblock invalid, trying backup blocks...
e2fsck: Bad magic number in super-block while trying to open /dev/sdb24

The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem.  If the device is valid and it really contains an ext2/ext3/ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>
 or
    e2fsck -b 32768 <device>

root@ubuntu:~# ^C
root@ubuntu:~# e2fsck -n /dev/block/platform/mmcblk15
e2fsck 1.42.9 (4-Feb-2014)
e2fsck: No such file or directory while trying to open /dev/block/platform/mmcblk15
Possibly non-existent device?