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urinal cake
09-20-2001, 02:19 AM
I have a UDMA66 drive as /dev/hda. dmesg tells me that: ide0 warning: dma3 4 5 not working, or something to that effect

Furthermore, hdparm -I confirms that my hda is operating at only dma2. Is this a kernel limitation, and can this be remedied? How? Will it make much difference.

hdparm -t gives me:

/dev/hda1: (fat32 windows) 12MB/sec.
/dev/hda5: (ext2 linux) 21MB/sec.

Manually setting dma4 with:
hdparm -X68 /dev/hda
makes no difference.

Malakin
09-20-2001, 03:16 AM
"cat /proc/ide/piix" is probably the best way to see what dma modes your ide channels are running at. I guess this probably only works for certain motherboards(?), anyways the info for others should be in that area.

I don't know why yours isn't running faster but I can tell you it won't make much difference. 21M/sec is pretty speedy

[ 20 September 2001: Message edited by: Malakin ]

urinal cake
09-20-2001, 08:01 AM
Thanks, Bump...excuse but I'll troll for a couple more replies.