My dvd writer suddenly cannot read my dvd rw disc, error message is i/o
error.
At first i thought it was the disc error, but i try on a new dvd rw disc,
still come out same problem.
Funny is that i still can read and burn dvd R.

I use Roxio drag-to-disc packed writing.

Question:
- the writer has different head for dvdr and dvdrw?
- will dvdrw disc with data have round circular mark similar to dvdr (the
diameter depends on how much data is stored). I cant remember previuosly my
dvdrw disc has this circle after i copied data to it.

In short, i do not know is my writer fault or im just so unlucky all my
dvdrw disc are faulty.

Regards,

Chew