>>>>
>>>>Debian does *not* enable DMA by default, which is why you had no issues
>>>>installing it. Try enabling DMA for the CDROM drive under Debian and see
>>>>if it still works ;-)
>>>
>>>DMA enabling was during installation. Even after
>>>installation RedHat enables dma for all devices ?
>>>
>>>Will check out tonight. If yes than will disable dma for my
>>>cd-rom. Than it will work ok.
>>
>>I got the problem. When compiling kernel on Debian once I had enabled the
>>option
>>
>>[ ATA/IDE/MFM/RLL Support ----> IDE,ATA & ATAPI Block devices ----> ]
>>* Intel PIIXn Chipsets Support
>>* PIIXn Tuning Support
If u disable the above options while compiling the kernel and than enable
dma for cdrom it mounts. The entire problem is because of the above option.
On my debian box :
debian:~# hdparm /dev/hdc
/dev/hdc:
HDIO_GET_MULTCOUNT failed: Invalid argument
I/O support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
HDIO_GET_NOWERR failed: Invalid argument
readonly = 1 (on)
readahead = 8 (on)
HDIO_GETGEO failed: Invalid argument
u see. dma is enabled and still I can mount the cdrom. This is because I
have compiled kernel 2.4.6 without enabling the above option.
If u want to enable dma for cdrom drive than u will have to recompile the kernel and
disable the above two options.
--
Saludos... :-)
------------------------------------------------------------------------------
Rajesh Fowkar [EMAIL PROTECTED]
Kurtarkar Nagari,Bldg-C,T4, http://rajesh.computers.webjump.com
Santacruz,Ponda-Goa-403401-INDIA Powered By : Debian GNU/Linux (Potato)
Kernel 2.4.6 & Mutt 1.3.19i
IceWM 1.0.8-6 & KDE 2.1
"Silence is the true friend that never betrays." - Confucious
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