AHCI/ATA_CAM for dummies?
Doug Barton
dougb at FreeBSD.org
Mon Dec 14 07:43:13 UTC 2009
b. f. wrote:
> Hmm. From what little I know, your chipset should support AHCI, so
> perhaps your motherboard or bios isn't set up right?:
>
> p. 39, 44 of the pdf at:
>
> http://www.intel.com/design/chipsets/datashts/307013.htm
On page 44 it says, "for some features, hardware support in the SATA
device ..."
Full output of 'camcontrol identify':
pass0: <Hitachi HTS721010G9SA00 MCZOC10H> ATA-7 SATA 1.x device
pass0: 100.000MB/s transfers (UDMA5, PIO size 8192bytes)
protocol ATA/ATAPI-7 SATA 1.x
device model Hitachi HTS721010G9SA00
firmware revision MCZOC10H
serial number MPCZN7Y0GZSYAL
cylinders 16383
heads 16
sectors/track 63
sector size logical 512, physical 512, offset 0
LBA supported 195371568 sectors
LBA48 supported 195371568 sectors
PIO supported PIO4
DMA supported WDMA2 UDMA5
overlap not supported
Feature Support Enable Value Vendor
read ahead yes yes
write cache yes yes
flush cache yes yes
Native Command Queuing (NCQ) yes 31/0x1F
Tagged Command Queuing (TCQ) no no 31/0x1F
SMART yes yes
microcode download yes yes
security yes no
power management yes yes
advanced power management yes yes 16512/0x4080
automatic acoustic management yes yes 254/0xFE 128/0x80
media status notification no no
power-up in Standby yes no
write-read-verify no no 0/0x0
unload no no
free-fall no no
Perhaps it does not have the requisite "hardware support" for ahci?
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