Hi Tejun, My friend has a motherboard with a SIS182 chipset (1039:0182), with four ports on the motherboard. BIOS sees it as two controllers, "IDE2" and "IDE3" with two ports apiece: "IDE2 Primary", "IDE2 Secondary", etc. If we plug drives into both the IDE2 Primary and IDE2 Secondary ports, BIOS correctly sees and identifies both drives, and they're both visible to grub, but sata_sis only sees the primary drive. The second drive just never shows up; no errors are reported. This is with Debian kernel 2.6.18 (same thing happens in .15, .16, .17). Changing various SATA-related BIOS settings doesn't help. I don't have any logs on me at the moment, but I'm trying to get a hold of this machine for a few days so I can put in a PATA root disk and build/test custom libata modules with more debugging info. Is there anything in particular I should look for or try? If I request warmplug with echo 0 0 0 > /sys/class/scsi_host/host1/scan or echo 0 1 0 > /sys/class/scsi_host/host1/scan then there is a soft-reset and the primary disk is rediscovered in both cases, but neither causes the secondary disk to be discovered. Also, hotplug polling doesn't seem to work. Removed disks aren't recognized as gone until I/O is attempted, and I have to request warmplug to get an inserted disk recognized. It's otherwise working fine. -jim - 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
