| Get AnyDVD HD and copy any DVD or Blu-ray disc with ease! |
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Message |
ireland
AfterDawn Addict
12 Jun 2007 3:10 PM
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checking DMA
http://webpages.charter.net/bacitup/TheGuides/checking%20DMA.pdf
NOTE IT CAN SAY DMA MODE BUT CAN BE IN PIO MODE
After the Windows IDE/ATAPI Port driver (Atapi.sys) receives a cumulative total of six time-out or cyclical redundancy check (CRC) errors, the driver reduces the communications speed (the transfer mode) from the highest Direct Memory Access (DMA) mode to lower DMA modes in steps. If the driver continues to receive time-out or CRC errors, the driver eventually reduces the transfer mode to the slowest mode (PIO mode)..
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What is DMA mode?
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.
WORKAROUND
To re-enable the typical, or faster, transfer mode for an affected device:
1. Double-click Administrative Tools, and then click Computer Management.
2. Click System Tools, and then click Device Manager.
3. Expand the IDE ATA/ATAPI Controllers node.
4. Double-click the controller for which you want to restore the typical DMA transfer mode.
5. Click the Driver tab.
6. Click Uninstall.
7. When the process completes, restart your computer. When Windows restarts, the hard disk controller is re-enumerated and the transfer mode is reset to the default value for each device that is connected to the controller.
link to info
http://support.microsoft.com/default.aspx?scid=kb;en-us;817472
FOR VISTA
You must be logged on as an administrator to perform these steps.
Direct memory access (DMA) is usually turned on by default for devices such as hard disks and CD or DVD drives that support DMA. However, you might need to turn on DMA manually if the device was improperly installed or if a system error occurred.
1.
Open Device Manager by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
2.
In the left pane, click the plus sign next to IDE ATA/ATAPI controllers to expand it.
3.
For each icon that has the word Channel as part of its label, right-click the icon, and then click Properties.
4.
Click the Advanced Settings tab, and then, under Device Properties, select or clear the Enable DMA check box.
5.
Click OK.
LINK FOR INFO
http://windowshelp.microsoft.com/Windows/en-US/Help/a33a9d88-7883-44d2-a7c8-55d3f320c7db1033.mspx
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