On Thu, 3 May 2007, Ulrich Spoerlein wrote:
Hi all,
I'm having a hard time getting my external (USB, Firewire) Plextor
PX-755UF to read any retail DVDs at all. I can read any kind of CDs
and also DVD-Rs. But mastered DVDs are invisible to FreeBSD.
I can not even read a single sector from such a DVD with the external
drive, but it's working just fine with the internal one. It's really
driving me nuts.
<snip>
The NEC drive can read DVDs just fine (although it sucks).
% recoverdisk /dev/cd1
start size len state done remaining % done
0 1048576 7411912704 0 0 7411912704 0.0000000^C
(130)% recoverdisk /dev/cd0
recoverdisk: DIOCGMEDIASIZE failed: No such file or directory
(1)% dd if=/dev/cd0 bs=2048
0+0 records in
0+0 records out
0 bytes transferred in 0.000093 secs (0 bytes/sec)
If I attach the device via Firewire, it's just the same. Perhaps it
requires some sort of quirk? Where should I start looking for debug
output? Which test should I run. Any help would be greatly
appreciated.
I had an issue with ripping some DVD's to my laptop before a trip I made
(note: no distribution occurred (for the lawyers :))). I wanted to
just use dd to do it, but dd would fail after a small amount of data was
read. If I first played a little of the DVD with mplayer, then dd would
work afterwards. It probably had something to do with mplayer
whispering sweet nothings to the DVD player.
Sean
--
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