# dmesg | tail
[ 3814.141522] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[ 3814.144669] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[ 3814.144687]  sdb: sdb1
[ 3814.151131] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[ 3814.151155] sd 4:0:0:0: [sdb] Attached SCSI removable disk
[ 3815.168442] UDF-fs: No anchor found
[ 3815.168453] UDF-fs: Rescanning with blocksize 2048
[ 3815.217359] UDF-fs: No anchor found
[ 3815.217372] UDF-fs: No partition found (1)
[ 3815.422309] ISOFS: Unable to identify CD-ROM format.