Basic problem is, stuttering playback on audio and video on both my DVD drives.
It turns out, one of three secondary IDE channels is set to PIO mode (it seems XP puts a channel in PIO mode automatically once the channel has had ‘n’ errors), and nothing I’ve done – including uninstalling all three secondary IDE channels and reinstalling them, applying some recommended registry hacks and even a clean XP install – have not fixed the problem.
I’m seriously considering replacing both drives, but I’d rather avoid spending £60 when it could be down to the motherboard IDE controller, the drivers, the cables, the registry – or the drives.
Thanks Buteman. Yeah, I seem to have pretty much spent the weekend Googling it. It's amazing how common this problem is, although I'd never heard it before. That's where I got my clues about uninstalling/reinstalling and hacking the registry. The solutions proposed seem to work for many people - but not for me... :-(
Michael, thanks. Sorry, I should have mentioned - the part of the weekend when I wasn't Googling, uninstalling/reinstalling and registry hacking was spent delving into the BIOS. Couldn't find anything there, though.
Thanks Tosh. I'm not sure if they're Samsung optical drives or not - I'll check next time I reboot. I guess you're talking about hard drives, though, right? The machine in question is a custom-build, built for me by someone else.
Thanks Lynette. Unfortunately, running this script was one of the things I tried under 'hacking the registry'. I ran the script twice, and then made the changes manually when it didn't work. Glad it worked for you, though!