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. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
