www.makemkv.com

Hi, I have been ripping 4 K discs for the last three years without too many difficulties. However, recently, my BW-16D1HT seems to struggle to read some of the newer titles. In particular, I cannot get the drive to read the Wonka 4K disc; this is before opening MakeMKV.

Normal steps to try are

Reboot the drive
Clean the disc with a damp lint free cloth and dry with another.
Replace the disc
Clean the drive lasers
Replace drive with a pioneer with old firmware.