I have a problem with my premium writer, which I bought 5 weeks ago. Its running as master in UDMA mode on the secondary IDE channel of my Win2000pro system (no other device on this). Other hardware is:
ASUS P2B, PIII600Mhz, 448 MB RAM PC100CL2.
The problem is, that I get multiple buffer underruns while burning a CD after some 20% of the CD is burned. Due to BurnProof the CD is ok, but also reading performance is affected. PlexTools read test shows, that the rate drops every couple seconds to something about 8x (please see attached jpg). I also got CRC reading errors while copying a data cd to hdd. My old Teac cd-rom would read that same cd wihtout any probs at all. Don’t know what to do anymore. I installed latest SP, firmware, chip drivers, disabled virus scanner, searched for background programs etc. The strange thing is, if I set the IDE channel mode to PIO, the read transfer rate shows no drops at all, it monotonically increases up to about 20x, where it remains. (I haven’t tried writing in PIO mode, so far.) Of course, I read this forums faq, but UDMA is already set. Is my system too slow? May the writer be damaged?
I would appreciate every hint.