On 03/29/17 20:24, Farty Breath wrote: > Sorry! Dmesg inline. 6.0 then 6.1. > > > OpenBSD 6.0 (RAMDISK_CD) #2100: Tue Jul 26 13:05:59 MDT 2016 > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/RAMDISK_CD ... > pciide0 at pci0 dev 31 function 2 "Intel 82801HBM RAID" rev 0x04: DMA, > channel 0 wired to native-PCI, channel 1 wired to native-PCI
and there's the problem. ... > OpenBSD 6.1 (RAMDISK_CD) #5: Wed Mar 29 06:02:36 MDT 2017 > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/RAMDISK_CD ... > pciide0 at pci0 dev 31 function 2 "Intel 82801HBM RAID" rev 0x04: DMA, ... and still there. See, that's why we want dmesg. :) A lot of machines ship with the SATA controller in a SW RAID mode. OpenBSD and I believe some Linux distros (and maybe some other BSDs? not sure) disable the controllers when in this mode to protect the data on the disks. Apparently, if you install an OS that doesn't recognize the BIOS/SW RAID mode, it will happily install to one disk...then the next time you reboot, it may end up overwriting the other disk in the machine. Good idea, really. Why exactly a laptop which only takes one disk would ship in RAID mode, no idea, but I've seen it a number of times. Anyway...dig through your bios to find the setting to disable that mode -- usually it's something like "compatibility/AHCI/RAID". You want AHCI. IF you really really really don't have that setting, even after upgrading your BIOS to the latest and least buggy, look at the patch that Paul de Weerd posted. But really, just turn that mode off. Nick.
