Try OpenBSD 5.6, a workaround was provided in ahci for this issue. Or, recompile your OpenBSD 5.5 kernel with this patch:
http://openbsd.cs.toronto.edu/cgi-bin/cvsweb/src/sys/dev/ic/ahci.c.diff?r1=1.13&r2=1.14 ML mail [[email protected]] wrote: > Hi, > > I'm trying to install OpenBSD 5.5 (amd64) to use as a firewall on a SATA > flash drive of 8 GB. Unfortuantely the drive does not get detected by OpenBSD > at the installation so I am unable to install OpenBSD. > > The relevant output of the dmesg would be the following: > > > "Intel C226 LPC" rev 0x05 at pci0 dev 31 function 0 not configured > ahci0 at pci0 dev 31 function 2 "Intel 8 Series AHCI" rev 0x05: msi, AHCI 1.3 > ahci0: device on port 1 didn't come ready, TFD: 0x80<BSY> > ahci0: stopping the port, softreset slot 31 was still active. > ahci0: unable to communicate with device on port 1 > > Any ideas for a workaround or fix? > > Regards > ML -- The bums will always lose

