This problem has absolutely baffled me! I'm having problems enabling DMA mode on my (perfectly capable) system. The problem is at the BIOS level, even before my operating system starts. At the summary page it states that my LG GCC-4480B Combo drive is running at PIO 4. However, I know the drive can go faster because I've had it for a while.
The problem started when I performed an experiment. The drive was set to secondary slave with another CD drive on master. I swapped them around, making sure to change the jumpers on each drive, to see if this would make the drive go any faster. Since then, I've been unable to get out of PIO mode. (Incidentally, the other drive, an old 4x CD Writer, runs in Multiword DMA Mode!)
Here are my system specs:
Gigabyte 7VAXP Ultra Motherboard (Via KT400)
Athlon XP 2000+ Processor
Primary Master: 40gb Generic Hard Drive, Running in DMA fine
Primary Slave: Zip 250, Running in DMA fine
Secondary Master: GCC-4480B, the problem drive
Secondary Slave: TEAC 4x CDRW, running in DMA fine
IDE3 Master: 120gb Maxtor HD, Running in DMA fine
Using 80pin cable for all drives
Running Win XP Pro
And here's what I've tried so far:
All the advice in this forum relating to enabling DMA in the OS
Reinstalling Windows XP
Running the drive as Secondary Slave
Runnning the drive as Secondary Master with no slave drive
Using 40-pin cable supplied with the drive (Comp doesn't start)
Changing the jumpers on both drives to Cable Select
Running the drive on IDE4 Master, alone (Cannot read or write CDs)
Made sure PIO and DMA modes in motherboard were set to 'Auto'
Updating the BIOS to the most recent version
Clearing the DMI and PnP data pools on the BIOS
Clearing the CMOS by removing and replacing the battery (no clear switch)
Updating my VIA 4in1 drivers, and using the ones supplied with WinXP
If anybody can help me with this, I will be in their debt. My flatmate is also having exactly the same problem, but with different hardware. I can't burn CDs faster than 16x, and doing so uses 100% of my CPU and sometimes produces 'coasters'.
Please please help!
Last edited by AlexScott
on Wed Nov 05, 2003 8:42 pm, edited 1 time in total.