sqtin

Thank you for help! Great! I used reset DMA option, rebooted computer and now all seems to be much better. Verify speed is such small because drive is reading in silent mode.

Hope these are lines you are speaking about. I have removed lines related only to ISO-file creation. Only one warning is shown here and as I remember it has been displaying all times before as I am using Daemon-Tools for a long time. Is it possible that Daemon-Tools prevent drive from working in DMA mode?

I have burnt dvd before making cd discovery. Is seems I found the problem reason: Unfortunately PIO remains even after reboot inspite of I see UDMA-5 mode in BIOS.

First I want to say many thanks to Lightning UK! ImgBurn is wonderful program. It seems I have a problem similar to one described in already existing topic. Some time ago disk burning speed has been decreased dramatically and buffer is constantly bouncing during burning. Can this indicate the problem with hardware? Here is BurnPlot graph on discovery mode.