How to get CD-Rom drive to support UDMA mode?

[hotlemond 0]

Hi,

I have an Aopen CD-956E cd-rom drive attached to a CMD ATA-100 controller card as primary master but I couldn't set it to support UDMA mode, it shows as PIO mode only even though I have chosen "DMA if available" in the device manager and that the cd-rom does support UDMA33.

 

Is there some changes to be made in the registry(and how?) or I should open up the PC to confirm the hardware setting like jumpers, etc.

 

Here's additional info on my setup:

Pentium 3, 1ghz

window XP Pro

Intel 850 mobo

2 X ATA100 HD on onboard controller, pri-master & sec-master

1 x CD-Rom Drive on CMD ATA100 controller card, pri-master

1 x CD-RW Drive on CMD ATA conroller card, sec-master

 

All other settings are fine and CD-Rom okay.

Any advice appreciated. Thanks.

[Ralf Hutter 0]

Have you checked your BIOS or your controller card's settings?

 

I have this exact same CDrom dive (but no Controller card) set as secondary master on an EPoX board and it (DMA setting) works fine under Win XP and Win2000.

[bottleneck 0]

my cdrom is the master on the 2-nd chanel (i815) and this:

Code:

Windows Registry Editor Version 5.00

 

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0002]

"InfPath"="mshdc.inf"

"InfSection"="atapi_Inst_secondary"

"ProviderName"="Microsoft"

"DriverDateData"=hex:00,80,62,c5,c0,01,c1,01

"DriverDate"="7-1-2001"

"DriverVersion"="5.1.2600.0"

"MatchingDeviceId"="secondary_ide_channel"

"DriverDesc"="Secondary IDE Channel"

"MasterDeviceType"=dword:00000002

"SlaveDeviceType"=dword:00000000

"MasterDeviceTimingMode"=dword:00002010

"MasterIdDataCheckSum"=dword:000147d6

"SlaveDeviceTimingMode"=dword:00000000

"SlaveDeviceDetectionTimeout"=dword:00000001

"EnumPropPages32"="storprop.dll,IdePropPageProvider"

"MasterDeviceTimingModeAllowed"=dword:ffffffff

"UserMasterDeviceTimingModeAllowed"=dword:ffffffff

"UserSlaveDeviceType"=dword:00000003

works

[hotlemond 0]

Hi Ralf an Bottleneck,

 

Thanks for the advice.

Will try both hardware and registry to see if it will work.

Get back to you guys if it doesn't. Thanks.

[Udo Kammer 0]

Quote:

Hi Ralf an Bottleneck,

Thanks for the advice.
Will try both hardware and registry to see if it will work.
Get back to you guys if it doesn't. Thanks.

You have to look at your bios, whether it recognizes your CD-ROM as PIO 4 or UDMA 33. In the first case, it may possible, that you have only PIO 4 or DMA Multiword 2. In the second normally XP activates DMA automatically.