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dd: error reading '/dev/sr0': Input/output error




When copying a dvd to file on the harddrive, I'm getting the message
dd: error reading '/dev/sr0': Input/output error
If I first run dvdbackup, then Ctrl-C out of it. I can then reissue the dd command and it will finish fine. If I eject the dvd then insert another dvd, the same situation occurs.

My system:

MD> lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 9.6 (stretch)
Release:        9.6
Codename:       stretch


example terminal session::

MD> sudo dd if=/dev/sr0 of=/sdb1/movie.iso
32596480 bytes (33 MB, 31 MiB) copied, 7.00018 s, 4.7 MB/s
dd: error reading '/dev/sr0': Input/output error
67688+0 records in
67688+0 records out
34656256 bytes (35 MB, 33 MiB) copied, 7.55342 s, 4.6 MB/s

MD> dvdbackup -M
libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a _long_ time, please be patient
libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00000142
libdvdread: Elapsed time 0
<snip>
libdvdread: Elapsed time 0
^C
MD> sudo dd if=/dev/sr0 of=/sdb1/movie.iso status=progress
7996654080 bytes (8.0 GB, 7.4 GiB) copied, 1831 s, 4.4 MB/s   
15621264+0 records in
15621264+0 records out
7998087168 bytes (8.0 GB, 7.4 GiB) copied, 1831.44 s, 4.4 MB/s