on 4.5 stable.

I'm using a CD drive with no problem until I need to create an ISO file
from a data CD-ROM for what I use this:

# dd if=/dev/rcd0c bs=32k > image.iso

then, at the end of the process, most times I got the kernel msg:
"Check Condition (error 0x70) on opcode 0x28"
and "dd" reports an "Input/Output Error"

What does this mean?

I know the CD-ROMs are fine and also the drive never give me problems
until I try to create a ISO image from a CD or DVD. I'm using various CD-ROMs
from various CD burners without any problem or kernel message.

should I add dmesg? I considered it unnecessary.

Regards
-Jesus

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