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Date:      Sat, 06 Mar 2010 21:43:04 +0200
From:      Alexander Motin <mav@FreeBSD.org>
To:        Andrea Venturoli <ml@netfence.it>
Cc:        freebsd-hardware@freebsd.org
Subject:   Re: SATA regression with 7.2
Message-ID:  <4B92B048.1030805@FreeBSD.org>
In-Reply-To: <1267899785.00226614.1267888204@10.7.7.3>
References:  <1267899785.00226614.1267888204@10.7.7.3>

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Andrea Venturoli wrote:
> I've got a box with a VIA VT8251 chipset and a single SATA HD, running
> 6.3/i386.
> I'm trying to upgrade it to 7.2, but, when booting with the new kernel,
> it won't detect any HD.
> In my BIOS I can set the controller to SATA, RAID or AHCI, but that
> doesn't matter.
> 
> Here's what I see when booting 6.3:
> 
> atapci0: <VIA AHCI controller> port
> 0xe880-0xe887,0xe800-0xe803,0xe480-0xe487,0xe400-0xe403,0xe080-0xe08f
> mem 0xfebfec00-0xfebfefff irq 21 at device 15.0 on pci0
> atapci0: AHCI Version 01.00 controller with 4 ports detected
> ata2: <ATA channel 0> on atapci0
> ata3: <ATA channel 1> on atapci0
> ata4: <ATA channel 2> on atapci0
> ata5: <ATA channel 3> on atapci0
> atapci1: <VIA 8251 UDMA133 controller> port
> 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xfc00-0xfc0f at device 15.1 on pci0
> ata0: <ATA channel 0> on atapci1
> ata1: <ATA channel 1> on atapci1
> ...
> ad4: 152627MB <WDC WD1600AAJS-00PSA0 05.06H05> at ata2-master SATA300
> Trying to mount root from ufs:/dev/ad4s1a
> 
> On 7.2 the output is roughly the same (I couldn't save it), but it won't
> find ad4 and prompt me for a boot device (with none available).

To get more info you may try to boot with verbose kernel messages enabled.

Also as soon as you are updating, I would suggest you to try new 7.3, or
even better 8-STABLE. 8-STABLE includes significant changes in ATA
subsystem, including completely new AHCI driver ahci(4).

-- 
Alexander Motin



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