Evening, this will be my first post here (ever)... so please bare with me if the post looks weird.
Anyways, I've been having issues with 'cdrom has a bad block' errors in the eventlog... The errors only occur when reading the dvds... what's weird is that the dvds come out fine when running neros scandisc or checking them for po/pif errors.
The dvds that I've burned are all Verbatim dvd+r's... and I've burned them on 3 NEC 3520a burners (I bought a new one the first time I got the errors... and then bought another one after 'around a week... since the storeowner thought I might've gotten a bad burner)
Also, another thing that's weird is that the only time the errors seem to occur, is when I read the dvds in the NEC burners (I got 2 hooked up)... when I read them in my DVD-Roms (one lite-on, 16x, not sure about the model... and another plextor dvd-rom), no errors occur.
Edit: I've tried burning at dif. speeds, but to no avail, also... i've exchanged cables / drives... uhm, even reinstalled the box a few times. (I've mostly been burning at 4x-8x (16x dvds))
I've probably wasted around... 100-200 dvd+r's now, and all of them have 'bad blocks'...
Ah, sorry about not posting the hardware specs, here goes:
ASUS P4P800-VM (Running latest bios + latest chipset drivers (intel chipset))
Pentium 4 3.0 HT
2 apacer 512mb pc3200 memory modules, tested them with memtest for about 18 hours. I know, i know, it's cheap memory, but I highly doubt that the memory has anything todo with the blocks
No soundcard or graphicscard (running the integrated stuff, i just built this box to burn on)
NEC 3520a as secondary master and a DVD-Rom, Plextor PX116A (kinda old...) as secondary slave.
Running Windows XP SP1 now, tried with SP2 before, but to no avail.
Ah, yeah... I updated the firmware from that page to 1.25, errors still occured tho... I got fed up with it, bought 2 benq dw1620a's... same issues with both of those (on another computer)... i decided to take a closer look and noticed that the 'writers' buffer fluctuate REAL bad when burning, doesn't matter at what speeds i burn the dvds on... or on what computer/burner, it still fluctuates. (nec/patched nec, benq, plextor, it's all the same)... buffer goes down to like 1-10 for a split second... then jumps back up to 98%... and it does that for like 5-6 times during the burn... and in the end, it drops down to 85-90% and fluctuates even more...
DMA is on... the harddrives are brand new... so I doubt they are fragmented or anything like that (I bought new drives for both computers after the problems started)...
Tips are greatly appreciated.
/Doug B... (I copied my post from the CDRInfo forum, so if it looks a bit weird, bare with me)