On Wed, 15 Aug 2007 16:54:52 +0900, Tejun Heo wrote: >Brad Campbell wrote: >> Tejun Heo wrote: >> >>> ATA bus error is a strong indicator for hardware problem. Please get a >>> separate power supply (doesn't have to be an expensive one), power it up >>> [1], and connect some of the drives to the power supply and see whether >>> errors persist on those drives. >>> >> >> 2 separate tests with the 2 troublesome drives, each time with both >> drives on a different power supply unit. Also tried new cables from a >> different manufacturer. >> >> It ain't the cables and it ain't the power. > >I see. Thanks. I'm pretty much out of ideas at this point. Mikael? The box was described as a KT600 chipset era machine with 3 Promise SATA150TX4 cards, a SIL3112 card, and an on-board VIA controller. According to the `lspci' posted the box probably also has an AGP card and at least one gigaether card (there's two, I guess one might be built-in). All in all, a rather heavily loaded (in terms of power, cooling, and the PCI bus) box (for a desktop chipset). I've never seen the SATA150-generation cards misbehave, so at this point I have to assume that it's a system limit issue, be it PCI, power, or cooling. /Mikael - 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