I tried an IDE-USB adapter with the Samsung SH-S202N dvdrw drive. There are no errors.
So the drive is ok. Only the libata driver failed. I can burn dvds with a 4x speed withou errors.
If you have an dma error you should remove the dvd-drive and connect it with an usb-adapter until the error from libata is fixed.
I tried an IDE-USB adapter with the Samsung SH-S202N dvdrw drive. There are no errors.
So the drive is ok. Only the libata driver failed. I can burn dvds with a 4x speed withou errors.
If you have an dma error you should remove the dvd-drive and connect it with an usb-adapter until the error from libata is fixed.