Onboard SATA Controller of Intel DH55HC Motherboard (FreeBSD 7.3 & FreeBSD 8.1)

Bahman Kahinpour bahman.linux at gmail.com
Mon Jan 24 11:40:08 UTC 2011

Hello FreeBSD people all over the world,

There is an onboard Intel SATA controller on Intel DH55HC motherboard.
I have tried FreeBSD version 7.3 and 8.1 on this motherboard, it
recognizes the SATA controller but recognizes the hard disk as IDE
devices. How can this happen?

$ uname -a
FreeBSD mail.freebsdsystem.net 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Sun
Jan 23 19:28:28 IRST 2011
root at mail.freebsdsystem.net:/usr/obj/usr/src/sys/CUSTOM  i386
$ dmesg | grep SATA
atapci1: <Intel PCH SATA300 controller> port
mem 0xfe725000-0xfe7257ff irq 19 at device 31.2 on pci0
ad8: 476940MB <WDC WD5000AADS-00S9B0 01.00A01> at ata4-master UDMA100 SATA 3Gb/s
ad10: 476940MB <WDC WD5000AADS-00S9B0 01.00A01> at ata5-master UDMA100
SATA 3Gb/s
ad12: 476940MB <WDC WD5000AADS-00S9B0 01.00A01> at ata6-master UDMA100
SATA 3Gb/s
acd0: DVDR <SONY DVD RW DRU-870S/1.61> at ata7-master UDMA100 SATA 1.5Gb/s

I did everything to prevent the FreeBSD kernel from recognizing the
hard drives as IDE. I turned off all IDE emulation options in the

How can I fix that?

Bahman Kahinpour

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