I am having an intermittent problem: ata1.01: SATA link down (SStatus 0 SControl 301) which is causing one of my four hard drives to not get recognized. This happens on ata1.01, ata2.00 or ata2.01, although it seems to happen more on the 01 channels, I believe. My motherboard is an ASUS P6T Deluxe V2, with the Marvel 88SE61XX ATA controller. I am running the 2.6.31 kernel. A variety of ATA controllers are enabled in my kernel (as per default?) including AHCI SATA Support (SATA_AHCI), Marvell SATA Support (SATA_MV), Generic ATA Support (ATA_Generic), and Marvell PATA Support via Legacy Mode (PATA_MARVELL), among others. I see that the pata, generic and ahci are getting loaded (from lsmod): libata 189532 4 pata_marvell,ata_generic,ahci,ata_piix I am not using hardware RAID (although do have software RAID 1 running). The BIOS for the board has been updated to the latest version. The disks are Seagate ST31000528AS 1 TB drives (4 of them, 2 sets of RAID 1). I also have a Sony BWU-300S plugged in. Would deselecting the pata_marvell likely get rid of this problem? The descriptor says: As I look through kern.log I see that the numbering on the ATA channels is not always consistent. For example, sometimes the Seagates come on ata3.00, ata3.01, ata4.00 and ata4.01. Is this usual, or indicating a problem with the controller/driver? Regards, Paul (on list) -- 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