Re[2]: hdc: [PTBL] [2495/255/63] hdc1, what is PTBL?

["Egor Tur" <worldeb@ukr.net>]

Hi folk, Hi Alvin.
> > I see when my system boot  up:
> > hda: 19932192 sectors (10205 MB) w/426KiB Cache, CHS=1240/255/63, UDMA(66)      
> > hdb: 44150400 sectors (22605 MB) w/1966KiB Cache, CHS=2748/255/63, UDMA(33)     
> > hdc: 40088160 sectors (20525 MB) w/1961KiB Cache, CHS=39770/16/63, UDMA(33)     
> 
> Notice ... hda/hdb  is 255 heads  in the CHS  ( same ide cable )
> 
> also notice, you're running a ata-33(hdb) device with a ata-66 drive(hda)
> on the same cable...
> 	move hdb to hdd  instead ( other ide cable )
> 
OK. I know that all my disks use UDMA(66). I try their on other computer and when I connect
hdc disk on primary cable it shows UDMA(66).
I compile kernel with automatically use DMA mode for IDE disk.
But hdparm -i /dev/hdb | grep dma:
 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4
I try hdparm -X68 /dev/hdb && hdparm -i /dev/hdb | grep dma:
 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 *udma4
How can I tell my kernel use UDMA(66) when kernel loads?

When I try hdparm -X86 /dev/hdc (on ide1):
/dev/hdc:
 setting xfermode to 86 (unknown, probably not valid)
dmesg | tail -1
ide1: Speed warnings UDMA 3/4/5 is not functional.

Is this correct? I have i810 chipset. on ASUS motherboard.

Now I set CD on secondary cable -> hdd.
hdparm -i /dev/hdd:
 DMA modes: mdma0 mdma1 *mdma2
How can I see how speed of transfer of data decreases on secondary cable?

Thanx.