Detect SATAs in real machine.

[donggas90]

I solved to find IDE and SCSI in VMware at this topic.
However in real machine probably that way doesn't match.

I had been querried all PCI devices in my PC and results are below.
Only listed device that has valid Vendor ID and Device ID.
All numeric in decimal.

• Bus Device Function / ClassCode Subclass Prog IF
  0 0 0 / 6 0 0
  0 1 0 / 6 4 0
  0 22 0 / 7 128 0
  0 26 0 / 12 3 32
  0 27 0 / 4 3 0
  0 28 0 / 6 4 0
  0 28 1 / 6 4 0
  0 28 2 / 6 4 0
  0 28 3 / 6 4 0
  0 28 4 / 6 4 0
  0 28 5 / 6 4 0
  0 28 6 / 6 4 1
  0 28 7 / 6 4 0
  0 29 0 / 12 3 32
  0 31 0 / 6 1 0
  0 31 2 / 1 6 1
  0 31 3 / 12 5 0
  1 0 0 / 3 0 0
  1 0 1 / 4 3 0
  3 0 0 / 12 3 48
  6 0 0 / 12 3 48
  7 0 0 / 2 0 0
  8 0 0 / 6 4 1
  9 3 0 / 12 0 16
  9 3 1 / 12 0 16
  9 3 2 / 12 0 16
  9 3 3 / 12 0 16
  9 3 4 / 12 0 16
  9 3 5 / 12 0 16
  9 3 6 / 12 0 16
  9 3 7 / 12 0 16
  10 0 0 / 1 6 1

There are only two SATA with ACHI detected.
but my mainboard has more SATA slots and they are now using.
1SDD, 4HDDs and 1ODD are connected.

Mainboard model is ASUS P8P67.



and I'll attach Windows Device Manager screen.

cap.PNG

I'm a Korean thus my Windows using Korean.
so listing some Korean in English below.
드라이브 is Drive
표준 is Standard
컨트롤러 is Controller

In Windows Device Manager, ACHI are can see device position in PCI so can compare with my OS.
but ATAs and CD/DVD-ROMs are not.
Format like this.
(Channel 1, Target 0, Lun 0)
It means, are they using another Interface instead of PCI?

What PCI device is SDD, HDD or ODD?

Additionally, Why Windows marked pair of ATAs as same position and name?
Such as 'ATA Channel0' and 'ATA Channel1'.

Thanks.

[Octocontrabass]

There are only two SATA with ACHI detected.

There are two SATA controllers. One SATA controller has 6 ports, and the other SATA controller has 2 ports. This is what Linux says about your motherboard:

Code: Select all

lspci -knn: 00:1f.2 SATA controller [0106]: Intel Corporation Cougar Point 6 port SATA AHCI Controller [8086:1c02] (rev 04)
lspci -knn: 	Subsystem: ASUSTeK Computer Inc. Device [1043:844d]
lspci -knn: 	Kernel driver in use: ahci
lspci -knn: 0a:00.0 SATA controller [0106]: Marvell Technology Group Ltd. Device [1b4b:9130] (rev 11)
lspci -knn: 	Subsystem: ASUSTeK Computer Inc. Device [1043:8438]
lspci -knn: 	Kernel driver in use: ahci

Format like this.
(Channel 1, Target 0, Lun 0)
It means, are they using another Interface instead of PCI?

They are using SATA.

What PCI device is SDD, HDD or ODD?

Those are not PCI devices, those are SATA devices. You must communicate with the SATA controller to find them.

Additionally, Why Windows marked pair of ATAs as same position and name?
Such as 'ATA Channel0' and 'ATA Channel1'.

Some of those belong to the first SATA controller, and others belong to the second SATA controller. Change the view from "Devices by type" to "Devices by connection" and it will make sense.

[donggas90]

Thanks Octocontrabass.

They are using SATA.

You mean, SATA AHCI has 6 'Ports' for each and SDD and HDDs are connected with those 'Ports'?
Maybe I have to read this wiki.

[Combuster]

You mean, SATA AHCI has 6 'Ports' for each and 'Port' is different with Function of PCI?
Maybe I have to read this wiki.

The forum rules actually instruct you to read before asking. There's this nice picture on that page that demonstrates exactly how wrong you are

[donggas90]

The forum rules actually instruct you to read before asking.

I didn't know about AHCI at all before asking.
NOW I have been known little about AHCI.
If didn't asked, also didn't realized to have to read that wiki.

[Combuster]

I didn't know about AHCI at all before asking.

What is it doing in your opening post then?

Just be more careful with the questions you ask.

[donggas90]

You already know many of HW and experienced about OS.
so you can infer something for OS.

Before I said, I'm a programmer and a begginner of OS.
I had not been used many HWs deeply even CPU instructions before.
AHCI as well.
I heard that name sometimes, but didn't know what is doing for.
and I asked many kewords of questions also.

You need to regard begginers of 'HW'.
Maybe somebodys are not know about even CPU.

In concretely, I didn't know about that SATA can indirectly connected with PCI by AHCI.
I thought, all about SATAs are connected with PCI directly only.
That's it.
You can think this point is very basic.
but for someone who is a begginer, that can be very big problem such as me.

Thanks for advise!