Re: dd: error reading '/dev/sr0': Input/output error
Using an old PATA-to-USB cable, I attached a 15 year old PATA DVD Drive to the SATA based computer I've been using. With this drive (/dev/sr1), dd seems to working fine without having to precede it with dvdbackup -M.
In the dvdread README on github, I found this: '..... If you attempt to read scrambled DVD
directly with cp/dd/readom, you'll get I/O error (Read of scrambled
sector without authentication) on all scrambled sectors .... dvdread uses libdvdcss to authenticate itself to DVD drive using
special IOCTLs, and this eliminates "Read of scrambled sector
without authentication" errors'
Thomas Schmitt wrote:
> I guess that dvdbackup is aware how to talk the drive into
Some traces in the web point to libdvdcss
> as helper.
> Best looking, content-wise is:
That is well done.