IBM 22P6969 - Manual (Page 31)

v If using RecordNow, select Options->Advanced, and make sure that
Burn-Proof is checked.
v Try reducing the write speed to 8x, 6x, or 4x
v Make sure the source and target drives are being operated in DMA mode.
See “Appendix C. Customizing the device-driver configuration settings” on
page C-1 for more information.
Appendix B. Problem solving B-5