Отформатировал второй диск, та же самая история:
dmesg | tail
[ 3489.708248] ISOFS: Unable to identify CD-ROM format.
[ 3489.708248] ISOFS: Unable to identify CD-ROM format.
[ 3553.756783] UDF-fs: Partition marked readonly; forcing readonly mount
[ 3553.799727] UDF-fs INFO UDF: Mounting volume 'CDROM', timestamp
2009/08/20 21:25 (10f0)
[ 5451.712147] UDF-fs: No partition found (1)
[ 5451.725228] UDF-fs: No partition found (1)
[ 5451.763807] UDF-fs: No partition found (1)
[ 5452.010212] ISOFS: Unable to identify CD-ROM format.
[ 5452.010212] ISOFS: Unable to identify CD-ROM format.
[ 5452.010212] ISOFS: Unable to identify CD-ROM format.
Видимо, я что-то не так делаю?