B
Bruce
Current set up is:
I've got a DMA problem, I think.
My machine is a Dell Dimension 4550, 2.4mHz, 1gb ram, running XPHome,
SP1. It came with one hard drive on the primary IDE channel, and a
LiteOn DVD-ROM LTD163 as a master and an HL-DT-ST CD-RW GCE-8400B as a
slave on the secondary IDE channel. (Many months ago, I added a slave
drive to the primary IDE, and all is fine with it.)
Here's the problem:
I recently bought a Plextor 708A DVD/-+RW burner, and swapped it out
with the HL-CD burner. (I left the LiteOn DVD-ROM as master, and
configured the Plextor DVD burner as slave.) It's a cable select
system, and both DVD drives are jumpered cable select.
The Plextor works fine, but now I can't play CDs or DVDs on the LiteOn.
If I try an audio cd, cda or mp3, the audio is warbled for the first 10
sedonds of each track, and then returns to normal. If I try to play a
DVD movie, the audio is warbled the entire time, and the video plays
about 2x speed, even though set for normal speed. I've done some
googling and newsgroups research on this, and suspect maybe there is a
DMA configuration problem. Here's my current DMA settings per the
Device Manager/IDE ATA/ATAPI controllers/Secondary IDE
Channel/Properties/Advanced Settings:
Primary Channel:
Device 0 (Master HD)
Transfer Mode: DMA if available
Current Transfer Mode: UDMA Mode 5
Device 1 (Slave HD)
Transfer Mode: DMA if available
Current Transfer Mode: UDMA Mode 5
Secondary Channel:
Device 0 (DVD-ROM)
Transfer Mode: DMA if available
Current Transfer Mode: PIO Mode
Device 1 (DVD/-+RW)
Transfer Mode: DMA if available
Current Transfer Mode: UDMA Mode 2
I can't find how to change the setting from PIO to DMA for the DVD-ROM.
Perhaps disable the secondary IDE controller, reboot, enable the
controller, and reboot?
The most inclusive discussion I've found on XP IDE controllers reverting
back to PIO is here:
http://sniptools.com/vault/getting-back-to-dma-mode-in-windows-xp.htm
I've also read that a DMA setting can go back to PIO if the drive has
been reporting read errors, but mine hasn't.
I'm about ready to try the registry fix, but before I do, any other
ideas?
I couldn't find anything in Kellys-Korner, which is the first place I
look.
Sincerely,
Bruce
I've got a DMA problem, I think.
My machine is a Dell Dimension 4550, 2.4mHz, 1gb ram, running XPHome,
SP1. It came with one hard drive on the primary IDE channel, and a
LiteOn DVD-ROM LTD163 as a master and an HL-DT-ST CD-RW GCE-8400B as a
slave on the secondary IDE channel. (Many months ago, I added a slave
drive to the primary IDE, and all is fine with it.)
Here's the problem:
I recently bought a Plextor 708A DVD/-+RW burner, and swapped it out
with the HL-CD burner. (I left the LiteOn DVD-ROM as master, and
configured the Plextor DVD burner as slave.) It's a cable select
system, and both DVD drives are jumpered cable select.
The Plextor works fine, but now I can't play CDs or DVDs on the LiteOn.
If I try an audio cd, cda or mp3, the audio is warbled for the first 10
sedonds of each track, and then returns to normal. If I try to play a
DVD movie, the audio is warbled the entire time, and the video plays
about 2x speed, even though set for normal speed. I've done some
googling and newsgroups research on this, and suspect maybe there is a
DMA configuration problem. Here's my current DMA settings per the
Device Manager/IDE ATA/ATAPI controllers/Secondary IDE
Channel/Properties/Advanced Settings:
Primary Channel:
Device 0 (Master HD)
Transfer Mode: DMA if available
Current Transfer Mode: UDMA Mode 5
Device 1 (Slave HD)
Transfer Mode: DMA if available
Current Transfer Mode: UDMA Mode 5
Secondary Channel:
Device 0 (DVD-ROM)
Transfer Mode: DMA if available
Current Transfer Mode: PIO Mode
Device 1 (DVD/-+RW)
Transfer Mode: DMA if available
Current Transfer Mode: UDMA Mode 2
I can't find how to change the setting from PIO to DMA for the DVD-ROM.
Perhaps disable the secondary IDE controller, reboot, enable the
controller, and reboot?
The most inclusive discussion I've found on XP IDE controllers reverting
back to PIO is here:
http://sniptools.com/vault/getting-back-to-dma-mode-in-windows-xp.htm
I've also read that a DMA setting can go back to PIO if the drive has
been reporting read errors, but mine hasn't.
I'm about ready to try the registry fix, but before I do, any other
ideas?
I couldn't find anything in Kellys-Korner, which is the first place I
look.
Sincerely,
Bruce