Enable DMA

[Guest]

I have 2 HDD on the Primary Channel and a CD-RW and a DVD-ROM on the Secondary Channel. All are set to 'Use DMA if Available'. Until 2 or 3 days ago the Master and Slave on the Primary and the DVD drive on the Secondary were all showing DMA in use and the CD-RW set to PIO only. But now both Secondary devices are set to PIO only although the 'Use DMA if available is still selected. How can I get the setting for my DVD drive back to DMA mode? The BIOS for both Channels is set to 'AUTO' but I have tried the 'USER' settings in various combinations without any success. I can't find any other settings in the BIOS connected with DMA.

 

[Guest]

once XP locks in the PIO from errors the only way the get
back is to un-install the device, re-boot. Shut down re-
boot re-install.

-----Original Message-----
I have 2 HDD on the Primary Channel and a CD-RW and a

DVD-ROM on the Secondary Channel. All are set to 'Use DMA
if Available'. Until 2 or 3 days ago the Master and Slave
on the Primary and the DVD drive on the Secondary were
all showing DMA in use and the CD-RW set to PIO only. But
now both Secondary devices are set to PIO only although
the 'Use DMA if available is still selected. How can I
get the setting for my DVD drive back to DMA mode? The
BIOS for both Channels is set to 'AUTO' but I have tried
the 'USER' settings in various combinations without any
success. I can't find any other settings in the BIOS
connected with DMA.

 

[Harry Ohrn]

check this link out for info on enabling DMA
http://www.blackmaxpc.com/Guides/Enable_DMA.htm

 

[Guest]

Thanks for your help, that fixed it. I tried the uninstall
before but it didn't solve the problem so this time I
uninstalled both devices on the Secondary channel and also
uninstalled the Secondary channel. The reboot found and
reinstalled the drives and the Secondary channel and after
a further reboot everything is back to normal, thanks
again.
Phil.

 

[Phil]

Thanks Harry, I've fixed it by uninstalling both drives
and the Secondary Channel and allowing XP to reinstall.
The site you mention looks very interesting and I have
bookmarked it for the future when/if I have a bit of spare
time, thanks again.
Phil.

-----Original Message-----
check this link out for info on enabling DMA
http://www.blackmaxpc.com/Guides/Enable_DMA.htm

--

Harry Ohrn MS-MVP [Shell/User]
www.webtree.ca/windowsxp

I have 2 HDD on the Primary Channel and a CD-RW and a DVD-ROM on the
Secondary Channel. All are set to 'Use DMA if Available'. Until 2 or 3 days
ago the Master and Slave on the Primary and the DVD drive on the Secondary
were all showing DMA in use and the CD-RW set to PIO only. But now both
Secondary devices are set to PIO only although the 'Use DMA if available is
still selected. How can I get the setting for my DVD drive back to DMA
mode? The BIOS for both Channels is set to 'AUTO' but I have tried the
'USER' settings in various combinations without any success. I can't find
any other settings in the BIOS connected with DMA.

.