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do you know what ide channel that cd is on? hdb or hdc, etc.
as root:
hdparm -d0 /dev/hdX
where X is b, c, d, etc...
also check if you enable dma in any scripts on start up or what not and delete that line if there is. for redhat, a common place to enable dma manually is /etc/rc.d/rc.local. and maybe post your grub.conf file.
i can now mount cd's on my faster drive without fearing a freeze. thanX
ThanKs for the Help
no problem. but are you sure dma is enabled? is it always enabled? do you know where it's enabled at? if i remember correctly hdparm settings aren't sticky. at least for me, hdparm dma wasn't on by default for my peripherals. i guess what i'm saying is to make sure you didn't manually set dma for that drive in one of your start up scripts.
dma is on on all devices by defualt on mv redhat 9 install.
as far as i now, i cannot find and reference to dma in any of the usual startup scripts.
but i have added the code to turn dma off on hdd in the last script rc.local just incase.
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