root@ubuntu:~# dmesg | tail
[ 1541.488811] EXT3-fs (sdc): error: can't find ext3 filesystem on dev sdc.
[ 1541.491680] EXT4-fs (sdc): VFS: Can't find ext4 filesystem
[ 1541.494405] FAT-fs (sdc): invalid media value (0xb6)
[ 1541.494410] FAT-fs (sdc): Can't find a valid FAT filesystem
[ 1541.497811] SQUASHFS error: Can't find a SQUASHFS superblock on sdc
[ 1616.231621] systemd-hostnamed[6049]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[ 1879.017753] FAT-fs (sdc): invalid media value (0xb6)
[ 1879.017761] FAT-fs (sdc): Can't find a valid FAT filesystem
[ 1910.526051] FAT-fs (sdc): invalid media value (0xb6)
[ 1910.526059] FAT-fs (sdc): Can't find a valid FAT filesystem