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DMA on/off
Mydvd writer is reading dvds at single speed ..and it is really
frustrating.... Can some kind soul put me out f my misery and tell me how to turn DMA back on (enable) Thanx as always Dave :) |
DaveB typed:
Mydvd writer is reading dvds at single speed ..and it is really frustrating.... Can some kind soul put me out f my misery and tell me how to turn DMA back on (enable) Thanx as always Dave :) If you run XP, i think this is what you wanted: Getting back to DMA mode in Windows XP CD-ROM and DVD-ROM drives can revert to using PIO mode, despite being set to use "DMA if Available." Here's how to make Windows XP redetect the DMA capabilities of the drives. This behaviour occurs with the following conditions: Windows XP is the operating system A CD-ROM or DVD-ROM drive, which is known to support DMA mode now works only in PIO mode. The drive controller is set to use "DMA if available" but reports to be only in PIO mode. Following is the mechanism that has worked for me, please try it at your own risk, it involves hacking the registry: Open RegEdit Find the following KEY: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\ Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x The last four digits will be 0000, 0001, 0002, 0003, and so on. Under each key, delete all occurences of the following values: MasterIdDataChecksum SlaveIdDataChecksum Reboot the computer. Windows will now redetect DMA settings. Trala! |
Sleeperman, thanx for reply
Xp says system is running with DMA enabled, but when i check using Nero it says DMA is turned off. I've been to Device Manager but it keeps reporting that all is running with DMA enabled , but the read/write speed is super slow, only doing at best 1.1x and taking an hour or more to read. Your solution looks like it might do the trick but it'll be Mon nite before i try it - I've never fiddled with the registry before so i hope it all works out OK. MAny thanks Dave :) "SleeperMan" wrote in message ... DaveB typed: Mydvd writer is reading dvds at single speed ..and it is really frustrating.... Can some kind soul put me out f my misery and tell me how to turn DMA back on (enable) Thanx as always Dave :) If you run XP, i think this is what you wanted: Getting back to DMA mode in Windows XP CD-ROM and DVD-ROM drives can revert to using PIO mode, despite being set to use "DMA if Available." Here's how to make Windows XP redetect the DMA capabilities of the drives. This behaviour occurs with the following conditions: Windows XP is the operating system A CD-ROM or DVD-ROM drive, which is known to support DMA mode now works only in PIO mode. The drive controller is set to use "DMA if available" but reports to be only in PIO mode. Following is the mechanism that has worked for me, please try it at your own risk, it involves hacking the registry: Open RegEdit Find the following KEY: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\ Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x The last four digits will be 0000, 0001, 0002, 0003, and so on. Under each key, delete all occurences of the following values: MasterIdDataChecksum SlaveIdDataChecksum Reboot the computer. Windows will now redetect DMA settings. Trala! |
There's no need to mess with the registry. Go to device manager and
uninstall the IDE controller that the drive is on. Then reboot and it should be good. "DaveB" wrote in message ... Sleeperman, thanx for reply Xp says system is running with DMA enabled, but when i check using Nero it says DMA is turned off. I've been to Device Manager but it keeps reporting that all is running with DMA enabled , but the read/write speed is super slow, only doing at best 1.1x and taking an hour or more to read. Your solution looks like it might do the trick but it'll be Mon nite before i try it - I've never fiddled with the registry before so i hope it all works out OK. MAny thanks Dave :) "SleeperMan" wrote in message ... DaveB typed: Mydvd writer is reading dvds at single speed ..and it is really frustrating.... Can some kind soul put me out f my misery and tell me how to turn DMA back on (enable) Thanx as always Dave :) If you run XP, i think this is what you wanted: Getting back to DMA mode in Windows XP CD-ROM and DVD-ROM drives can revert to using PIO mode, despite being set to use "DMA if Available." Here's how to make Windows XP redetect the DMA capabilities of the drives. This behaviour occurs with the following conditions: Windows XP is the operating system A CD-ROM or DVD-ROM drive, which is known to support DMA mode now works only in PIO mode. The drive controller is set to use "DMA if available" but reports to be only in PIO mode. Following is the mechanism that has worked for me, please try it at your own risk, it involves hacking the registry: Open RegEdit Find the following KEY: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\ Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x The last four digits will be 0000, 0001, 0002, 0003, and so on. Under each key, delete all occurences of the following values: MasterIdDataChecksum SlaveIdDataChecksum Reboot the computer. Windows will now redetect DMA settings. Trala! |
True. I never thought of that...
But, to DaveB: Does device manager says DMA if available and below line Ultra DMA x (1 or 2 i believe), or second line says PIO? Second line actually states real state of IDE controller. Dan G typed: There's no need to mess with the registry. Go to device manager and uninstall the IDE controller that the drive is on. Then reboot and it should be good. "DaveB" wrote in message ... Sleeperman, thanx for reply Xp says system is running with DMA enabled, but when i check using Nero it says DMA is turned off. I've been to Device Manager but it keeps reporting that all is running with DMA enabled , but the read/write speed is super slow, only doing at best 1.1x and taking an hour or more to read. Your solution looks like it might do the trick but it'll be Mon nite before i try it - I've never fiddled with the registry before so i hope it all works out OK. MAny thanks Dave :) "SleeperMan" wrote in message ... DaveB typed: Mydvd writer is reading dvds at single speed ..and it is really frustrating.... Can some kind soul put me out f my misery and tell me how to turn DMA back on (enable) Thanx as always Dave :) If you run XP, i think this is what you wanted: Getting back to DMA mode in Windows XP CD-ROM and DVD-ROM drives can revert to using PIO mode, despite being set to use "DMA if Available." Here's how to make Windows XP redetect the DMA capabilities of the drives. This behaviour occurs with the following conditions: Windows XP is the operating system A CD-ROM or DVD-ROM drive, which is known to support DMA mode now works only in PIO mode. The drive controller is set to use "DMA if available" but reports to be only in PIO mode. Following is the mechanism that has worked for me, please try it at your own risk, it involves hacking the registry: Open RegEdit Find the following KEY: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\ Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x The last four digits will be 0000, 0001, 0002, 0003, and so on. Under each key, delete all occurences of the following values: MasterIdDataChecksum SlaveIdDataChecksum Reboot the computer. Windows will now redetect DMA settings. Trala! |
Hi and a BIG thanx for your help....
I've had a look at Device Manager and IDE ATA/ATAPI CONTROLLERS - then i select Primary IDE channel and this is what i have.... Device 0 Device Type - Auto Detection Transfer Mode - DMA If Available Current Transfer Mode - Ultra DMA Mode 5 Device 1 Device Type - Auto Detection Transfer Mode - DMA If Available Current Transfer Mode - PIO Mode - now looking at this....me thinks I need to change the bottom setting to Current Transfer Mode to Ultra DMA mode 5 too - if i delete the primary IDE channel and re-boot would it pick it up? Sorry if I appear clueless but ....I am (lol) "SleeperMan" wrote in message ... True. I never thought of that... But, to DaveB: Does device manager says DMA if available and below line Ultra DMA x (1 or 2 i believe), or second line says PIO? Second line actually states real state of IDE controller. Dan G typed: There's no need to mess with the registry. Go to device manager and uninstall the IDE controller that the drive is on. Then reboot and it should be good. "DaveB" wrote in message ... Sleeperman, thanx for reply Xp says system is running with DMA enabled, but when i check using Nero it says DMA is turned off. I've been to Device Manager but it keeps reporting that all is running with DMA enabled , but the read/write speed is super slow, only doing at best 1.1x and taking an hour or more to read. Your solution looks like it might do the trick but it'll be Mon nite before i try it - I've never fiddled with the registry before so i hope it all works out OK. MAny thanks Dave :) "SleeperMan" wrote in message ... DaveB typed: Mydvd writer is reading dvds at single speed ..and it is really frustrating.... Can some kind soul put me out f my misery and tell me how to turn DMA back on (enable) Thanx as always Dave :) If you run XP, i think this is what you wanted: Getting back to DMA mode in Windows XP CD-ROM and DVD-ROM drives can revert to using PIO mode, despite being set to use "DMA if Available." Here's how to make Windows XP redetect the DMA capabilities of the drives. This behaviour occurs with the following conditions: Windows XP is the operating system A CD-ROM or DVD-ROM drive, which is known to support DMA mode now works only in PIO mode. The drive controller is set to use "DMA if available" but reports to be only in PIO mode. Following is the mechanism that has worked for me, please try it at your own risk, it involves hacking the registry: Open RegEdit Find the following KEY: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\ Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x The last four digits will be 0000, 0001, 0002, 0003, and so on. Under each key, delete all occurences of the following values: MasterIdDataChecksum SlaveIdDataChecksum Reboot the computer. Windows will now redetect DMA settings. Trala! |
BIG BIG BIG THANKS TO YOU BOTH..........
I bit the bullet, delete the primary IDE and then rebooted, XP picked it up, re-booted and now my lovely DMA is enabled and is reading dvds like a dream. Theres a beer in the fridge for you both... ----- THANKS AGAIN..........DAVE :))))))))))))))))))))))))))))))))))))) "DaveB" wrote in message ... Hi and a BIG thanx for your help.... I've had a look at Device Manager and IDE ATA/ATAPI CONTROLLERS - then i select Primary IDE channel and this is what i have.... Device 0 Device Type - Auto Detection Transfer Mode - DMA If Available Current Transfer Mode - Ultra DMA Mode 5 Device 1 Device Type - Auto Detection Transfer Mode - DMA If Available Current Transfer Mode - PIO Mode - now looking at this....me thinks I need to change the bottom setting to Current Transfer Mode to Ultra DMA mode 5 too - if i delete the primary IDE channel and re-boot would it pick it up? Sorry if I appear clueless but ....I am (lol) "SleeperMan" wrote in message ... True. I never thought of that... But, to DaveB: Does device manager says DMA if available and below line Ultra DMA x (1 or 2 i believe), or second line says PIO? Second line actually states real state of IDE controller. Dan G typed: There's no need to mess with the registry. Go to device manager and uninstall the IDE controller that the drive is on. Then reboot and it should be good. "DaveB" wrote in message ... Sleeperman, thanx for reply Xp says system is running with DMA enabled, but when i check using Nero it says DMA is turned off. I've been to Device Manager but it keeps reporting that all is running with DMA enabled , but the read/write speed is super slow, only doing at best 1.1x and taking an hour or more to read. Your solution looks like it might do the trick but it'll be Mon nite before i try it - I've never fiddled with the registry before so i hope it all works out OK. MAny thanks Dave :) "SleeperMan" wrote in message ... DaveB typed: Mydvd writer is reading dvds at single speed ..and it is really frustrating.... Can some kind soul put me out f my misery and tell me how to turn DMA back on (enable) Thanx as always Dave :) If you run XP, i think this is what you wanted: Getting back to DMA mode in Windows XP CD-ROM and DVD-ROM drives can revert to using PIO mode, despite being set to use "DMA if Available." Here's how to make Windows XP redetect the DMA capabilities of the drives. This behaviour occurs with the following conditions: Windows XP is the operating system A CD-ROM or DVD-ROM drive, which is known to support DMA mode now works only in PIO mode. The drive controller is set to use "DMA if available" but reports to be only in PIO mode. Following is the mechanism that has worked for me, please try it at your own risk, it involves hacking the registry: Open RegEdit Find the following KEY: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\ Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x The last four digits will be 0000, 0001, 0002, 0003, and so on. Under each key, delete all occurences of the following values: MasterIdDataChecksum SlaveIdDataChecksum Reboot the computer. Windows will now redetect DMA settings. Trala! |
This a common issue with XP, it'll happen every time you try to read a disc
with a lot of errors. Like a scratched disc or certain protected games, etc, etc. If you look in Event Viewer, you may find the errors listed there right before it switches to PIO. Another fine gift from Bill Gates. "DaveB" wrote in message ... BIG BIG BIG THANKS TO YOU BOTH.......... I bit the bullet, delete the primary IDE and then rebooted, XP picked it up, re-booted and now my lovely DMA is enabled and is reading dvds like a dream. Theres a beer in the fridge for you both... ----- THANKS AGAIN..........DAVE :))))))))))))))))))))))))))))))))))))) "DaveB" wrote in message ... Hi and a BIG thanx for your help.... I've had a look at Device Manager and IDE ATA/ATAPI CONTROLLERS - then i select Primary IDE channel and this is what i have.... Device 0 Device Type - Auto Detection Transfer Mode - DMA If Available Current Transfer Mode - Ultra DMA Mode 5 Device 1 Device Type - Auto Detection Transfer Mode - DMA If Available Current Transfer Mode - PIO Mode - now looking at this....me thinks I need to change the bottom setting to Current Transfer Mode to Ultra DMA mode 5 too - if i delete the primary IDE channel and re-boot would it pick it up? Sorry if I appear clueless but ....I am (lol) "SleeperMan" wrote in message ... True. I never thought of that... But, to DaveB: Does device manager says DMA if available and below line Ultra DMA x (1 or 2 i believe), or second line says PIO? Second line actually states real state of IDE controller. Dan G typed: There's no need to mess with the registry. Go to device manager and uninstall the IDE controller that the drive is on. Then reboot and it should be good. "DaveB" wrote in message ... Sleeperman, thanx for reply Xp says system is running with DMA enabled, but when i check using Nero it says DMA is turned off. I've been to Device Manager but it keeps reporting that all is running with DMA enabled , but the read/write speed is super slow, only doing at best 1.1x and taking an hour or more to read. Your solution looks like it might do the trick but it'll be Mon nite before i try it - I've never fiddled with the registry before so i hope it all works out OK. MAny thanks Dave :) "SleeperMan" wrote in message ... DaveB typed: Mydvd writer is reading dvds at single speed ..and it is really frustrating.... Can some kind soul put me out f my misery and tell me how to turn DMA back on (enable) Thanx as always Dave :) If you run XP, i think this is what you wanted: Getting back to DMA mode in Windows XP CD-ROM and DVD-ROM drives can revert to using PIO mode, despite being set to use "DMA if Available." Here's how to make Windows XP redetect the DMA capabilities of the drives. This behaviour occurs with the following conditions: Windows XP is the operating system A CD-ROM or DVD-ROM drive, which is known to support DMA mode now works only in PIO mode. The drive controller is set to use "DMA if available" but reports to be only in PIO mode. Following is the mechanism that has worked for me, please try it at your own risk, it involves hacking the registry: Open RegEdit Find the following KEY: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\ Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x The last four digits will be 0000, 0001, 0002, 0003, and so on. Under each key, delete all occurences of the following values: MasterIdDataChecksum SlaveIdDataChecksum Reboot the computer. Windows will now redetect DMA settings. Trala! |
"Dan G" wrote in :
This a common issue with XP im surprised they didnt fix it in the service pack. |
I think they consider it a "feature".
"Theo" wrote in message ... "Dan G" wrote in : This a common issue with XP im surprised they didnt fix it in the service pack. |
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