Vista - DVD multidrive cant read UDF DVDs

i am using Windows Vista Ultimate (32-bit) and i have a Sony DVD multidrive
but its connected using IDE...when i insert a UDF formatted DVD it treats the
DVD as a blank disk. I have XP on my laptop that reads the DVDs normally.
how can i solve this problem??

I have a
MSI CD RW Recorder
and a
Sony DVD RW DRU-830a ATA Device
on IDE
In Windows Vista (and not on XP) most of the times, when I insert a DVD
into Sony DVD RW , It's shown as blank.
When the windows installation is fresh the problem is minimal but
gradually!!? it becomes more persistent and at some point I'm not able
to get disks read,
While, everything is ok in win XP installed on the same machine at the
same time with the same programs on it.
I have reinstalled my vista several times already. Windows Vista & MB
Bios & DVD-Rom Bios are updated.


I too, would be thankful for any help provided.


--
mndt
Posted via http://www.vistaheads.com

I'm having the same issue. I have a fairly new Dell Vostro 1400
notebook with a DVD burner / multi reader. I'm running Vista Business
64 bit. The drive is a Pioneed DVD +- RWDR-K17 ATA device.
I've been able to read many CD's and DVD's without issue. Today I
tried to read a CD which I believe was created using the UDF format.
Vista treats it as a blank CD and wants to format it. The disk reads
fine in multiple XP machines.
Also, I noticed that Vista is misreading the disc size. There is a
single 118MB file on the disc and Vista is reporting that it is a
blank disc with 118MB of available space.

*Update. As I was writing this response, a friend walked by with Vista
Ultimate 64bit. His machine also deteced the disc as being blank when
he inserted it. However, when he explored the disc (as opposed to
double clicking it and auto-running) he was able to see the file on
the disc and copy it.

Odd, eh?