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Thursday 19.3.2026 / 13:15
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afterdawn.com > forums > dvd±r discussion > dvd±r for newbies > dms got drives,
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pmccowan
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_ 		26. May 2005 @ 13:07 _ Link to this message    Send private message to this user   
I have read some where that you shoulf mot use dma ennbabled on external drives as it causes problems, I have noticed that on my machien, the Primary IDS does have DMA ebabbled .while the deconmd IDS channel has PIO nabled..Is thius OK, and do the settings need ti be differet.?

What is DMA Used or.
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mrbillpro
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_ 		26. May 2005 @ 13:24 _ Link to this message    Send private message to this user   
What? Can you please spell check maybe we could understand your question.
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pmccowan
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_ 		26. May 2005 @ 13:53 _ Link to this message    Send private message to this user   
Sorry I Got In A Hurry. I noticed that DMA was enabled on my Primary IDe Channel, but PIO was enabled on the Secondary IDE Channel. I have read or heard someplace that DMA should be enabled only in extreme and special cases. Is there any truth to this, and what is exactly DMA good for? Sorry about the bad spelling before.
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mrbillpro
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_ 		26. May 2005 @ 13:59 _ Link to this message    Send private message to this user   
DMA (Direct memory access) mode is a high performance mode for transferring data to and from devices, in particular, to CD and DVD burner devices.

The burner devices can function in either DMA or PIO modes. DMA mode allows the processor to transfer large pieces of data with very little software overhead - therefore requiring low CPU utilization. In this mode, high speed burning can be performed in background with other programs running.

PIO mode requires CPU processing for every few bytes sent to the device, so that CPU utilization becomes very high when trying to burn at high speeds.


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Win 2000 Pro SOYO SY-P41 845PE P4 2.8 Adaptec 29160N SCSI Controller Seagate SCSI Cheetah 15K 1024 meg/333 DDR
NVIDIA Geforce FX 6600 DDR 256MB Creative Sound
HP CD/RW Sony DRU-530A DVD-RW
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pmccowan
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_ 		26. May 2005 @ 14:44 _ Link to this message    Send private message to this user   
Thanks. You were very informative.
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