[[File:Generic-card-reader.jpg|center|thumb|Generic Card Reader]]
In case of error, the kernel message that is printed is the following <syntaxhighlight langpre class="bashmw-collapsible mw-collapsed">
[ 358.392710] sdb: sdb1 sdb2
[ 880.588382] EXT4-fs (sdb2): mounting ext3 file system using the ext4 subsystem
[ 1022.476202] EXT4-fs warning (device sdb2): dx_probe:786: inode #851989: lblock 0: comm tar: error -5 reading directory block
[ 1022.476204] EXT4-fs warning (device sdb2): dx_probe:786: inode #851989: lblock 0: comm tar: error -5 reading directory block
</pre>
</syntaxhighlight>To avoid this problem, it is recommended to change the micro SD card reader, and then choose a more robust one.