The 2 SATA drives are currently connected to SATA port 1 & 2 (so the BIOS tells me). I just connected another SATA drive to port number 4 and the same occured for that drive too.
There are no further details following the scsibus0 line. ahci0 at pci0 dev 14 function 0 "NVIDIA MCP73 AHCI" rev 0xa2: irq 11, AHCI 1.1 ahci0: failed to start command DMA on port 0, disabling ahci0: failed to start command DMA on port 2, disabling ahci0: failed to start command DMA on port 3, disabling <----- scsibus0 at ahci0: 32 targets, initiator 32 I found some information about a bug with my Nvidia chipset and FreeBSD, which refers to SATA drives - http://www.nabble.com/i386-129542:-FreeBSD-7.1-RC1-installer-cannot-find-WD-SATA-hard-drive-with-MCP73M01H1-mainboard-(MCP73-SATA-controller)-td20928904.html Do you think there could be a relationship there (even though it's a different plaform? On Mon, Apr 20, 2009 at 8:23 PM, Anathae Townsend <atowns...@nucleus.com>wrote: > I'm not an expert by any means when it comes to OpenBSD, > AHCI, or SATA, but here are some shots in the dark. > > Does your machine have four SATA ports on it? Can you > identify which of the four ports your two SATA drives are > plugged into? Can you add additional SATA drives and see > if these errors are resolved or multiplied? > > First guess is that the AHCI method for deciding which ports > have SATA devices attached is not working properly on your > motherboard/chipset. Second guess is that the chipset or > motherboard has some problems with DMA happening the way > that the ahci device expects it to work. > > Are there any sd devices listed after the scsibus0 line? > > something like this? > > scsibus1 at umass0: 2 targets, initiator 0 > sd0 at scsibus1 targ 1 lun 0: <Y-E DATA, USB HS-CF Card, > 4.08> SCSI0 0/direct removable > sd0: drive offline > sd1 at scsibus1 targ 1 lun 1: <Y-E DATA, USB HS-xD/SM, > 4.08> SCSI0 0/direct removable > sd1: drive offline > sd2 at scsibus1 targ 1 lun 2: <Y-E DATA, USB HS-MS Card, > 4.08> SCSI0 0/direct removable > sd2: drive offline > sd3 at scsibus1 targ 1 lun 3: <Y-E DATA, USB HS-SD Card, > 4.08> SCSI0 0/direct removable > sd3: drive offline > > > Kristian Rooke Wrote > > Thanks for the suggestions. > > > > I checked the BIOS configuration and it appears that the SATA > > controller was > > set to IDE (not sure how that happened). I have now set it to AHCI, but > > I am > > seeing another error in dmesg.... > > > > ahci0 at pci0 dev 14 function 0 "NVIDIA MCP73 AHCI" rev 0xa2: irq 11, > > AHCI > > 1.1 > > ahci0: failed to start command DMA on port 0, disabling > > ahci0: failed to start command DMA on port 2, disabling > > scsibus0 at ahci0: 32 targets, initiator 32 > > > > Does this mean that AHCI on my m/b is not supported in OpenBSD? > > Any other thoughts?
