Marcin Juszkiewicz wrote: > This time it worked (log below). Should I check power supply and replace > it if needed? > > [ 6760.345046] ata6: exception Emask 0x10 SAct 0x0 SErr 0x90000 action 0xb > [ 6760.345053] ata6: SError: { PHYRdyChg 10B8B } Okay, this is PHYRDY changed w/o any command pending. Things like this happening autonomously indicates something is off with your hardware. I can't tell which. It could be PSU, the controller or the drive itself. The only way to find out is trying different hardware configurations and examining how the symptom changes. ie. connecting the drive to another port or controller, trying different power supply, etc... -- tejun - 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