Weired problem with DMA enabling in XP - Club CDFreaks

charleybaiyu · 04-05-2003

Hi, there, I have got a weired problem with DMA enabling in my winXP pro system.

I have a sony 12x8x32 CDW and a toshiba 16X DVD Rom installed the secondary IDE channel of my Asus A7V133 mb of my AMD 1GHz system. I am quite sure these 2 drives are DMA capable but NO MATTER HOW I tried to set them to "DMA if Available" in my device manager, they always remain "PIO Mode" after restart.
in the BIOS setup, both ROM has default setting of PIO level 4 and DMA level 2. and my system has 256MB SDRAM, and 80GB hd,

I have experience sound lagging while playing DVD movie, and I couldn't do anything while I am burning a CD. I suspect that all these problems are caused by PIO mode.

Could some expert points me to some solution?

Thanks in advance

**xtacydima** · 04-05-2003

What IDE cables do you have. Sometimes when wrong cables are used this happens. Are you using ATA 100 or ATA 133?

Daemonicus · 04-05-2003

Run Regedit and find the following key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro
l\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x

Last four digits usually are 0001, 0002. Under those keys you will find MasterIdDataChecksum, SlaveIdDataChecksum. Delete the value corresponding to your drive. It will make the OS to redetect the device DMA capabilities after reboot

This worked for me.

charleybaiyu · 04-05-2003

Thanks for all your reply.

I just fixed the problem. I deleted the secondary IDE channel from the device manager, and reboot my system, then the system re-detected the ROMs and gave them UDMA2 instead of PIO.

04-05-2003	#1 (permalink)
charleybaiyu New on Forum Join Date: May 2003 Posts: 3	Weired problem with DMA enabling in XP <a href='http://adstats.cdfreaks.com/www/delivery/ck.php?n=a13febf7&cb=INSERT_RANDOM_NUMBER_HERE' target='_blank'><img src='http://adstats.cdfreaks.com/www/delivery/avw.php?zoneid=30&cb=INSERT_RANDOM_NUMBER_HERE&n=a13febf7' border='0' alt='' /></a> Hi, there, I have got a weired problem with DMA enabling in my winXP pro system. I have a sony 12x8x32 CDW and a toshiba 16X DVD Rom installed the secondary IDE channel of my Asus A7V133 mb of my AMD 1GHz system. I am quite sure these 2 drives are DMA capable but NO MATTER HOW I tried to set them to "DMA if Available" in my device manager, they always remain "PIO Mode" after restart. in the BIOS setup, both ROM has default setting of PIO level 4 and DMA level 2. and my system has 256MB SDRAM, and 80GB hd, I have experience sound lagging while playing DVD movie, and I couldn't do anything while I am burning a CD. I suspect that all these problems are caused by PIO mode. Could some expert points me to some solution? Thanks in advance __________________ Charley

04-05-2003	#2 (permalink)
xtacydima Moderator Join Date: Sep 2002 Location: Brooklyn, NY, USA Posts: 3,839	What IDE cables do you have. Sometimes when wrong cables are used this happens. Are you using ATA 100 or ATA 133? __________________ My Rig: Antec P160 P4 3.0E GHz running WinXP w/SP2 Scythe SCMN-1000 Heatsink w/Arctic Silver 5 Antec TruePower 2.0 TP2-550 (550W power supply) ASUS P4C800 Deluxe Motherboard 2GB RAM - Corsair XMS TWINX2048 (2x1GB) 3200C2Pro CL2.0 ATI RADEON X850XT AGP 2 - WD 37GB Raptor's (in RAID 0) via onboard Promise controller Western Digital 250GB SATA HDD on Primary SATA channel Western Digital 150GB SATA HDD on Secondary SATA channel Lite-On LTR-52246S 6S0F (IDE1 Master) Lite-On JLMS XJ-HD166S DS1C (IDE1 Slave) *NEC 3500AG 2.TC Quiet* (IDE2 Master) Lite-On SOHW 1673S JS07 (via USB 2.0 to IDE & set to Master)** Found a Solution here helpful? Like the forum's? Well then, what are you waiting for JOIN NOW!!!

04-05-2003	#4 (permalink)
charleybaiyu New on Forum Join Date: May 2003 Posts: 3	Thanks Thanks for all your reply. I just fixed the problem. I deleted the secondary IDE channel from the device manager, and reboot my system, then the system re-detected the ROMs and gave them UDMA2 instead of PIO. __________________ Charley

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04-05-2003	#3 (permalink)
Daemonicus CD Freaks Senior Member Join Date: Nov 2002 Location: On top of your Mother Posts: 412	Run Regedit and find the following key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x Last four digits usually are 0001, 0002. Under those keys you will find MasterIdDataChecksum, SlaveIdDataChecksum. Delete the value corresponding to your drive. It will make the OS to redetect the device DMA capabilities after reboot This worked for me.