I have a Pentium-D machine with ICH7 chipset running the 64bit version of FC5 that has one S-ATA disk and one P-ATA disk. The S-ATA disk runs normally giving good performance while the P-ATA disk does about 1.5MB/s (PIO). I have the drivers loaded in the initrd (can even have the root filesystem on the P-ATA disk). The P-ATA disk in question ran at full speed on RHEL4 in a 32bit Celeron machine and has run at full speed in a Pentium 4 machine running FC5. Any ideas or suggestions for tests I should perform? Below is the relevant section of dmesg output: Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx ide0: I/O resource 0x1F0-0x1F7 not free. ide0: ports already in use, skipping probe Probing IDE interface ide1... hdc: WDC WD3000JB-00KFA0, ATA DISK drive hdd: BENQ DVD DD DW1640, ATAPI CD/DVD-ROM drive ide1 at 0x170-0x177,0x376 on irq 15 hdc: max request size: 512KiB hdc: 586072368 sectors (300069 MB) w/8192KiB Cache, CHS=36481/255/63 hdc: cache flushes supported hdc: hdc1 hdc2 hdc3 hdd: ATAPI 48X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache Uniform CD-ROM driver Revision: 3.20 ide-floppy driver 0.99.newide - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
