Startup Device Menu

bbkevin
bbkevin used Ask the Experts™
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I would like to add more hard disks in my PC. When I click F12 during machine boot, I see the "Startup Device Menu", would you explain the meaning of COS0 & COS1 in the following?

Startup Device Menu
4. IDE CD: HL-DT-DTDVD-RAM GH60N
5. PCI SCSI: COS0 ST3300657SS
6. PCI SCSI: COS1 ST3300657SS

(I am not system support people)
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noxchoIT Product Manager
Top Expert 2009

Commented:
I would check with PCI controller documentation if they give there this abbreviation. In my understanding it means Controller Slot0 and Controller Slot1. But I can be mistaken.
It should be PCI scsi  controller port 0 and port 1 respectively. Your Mother board manual should have hints.
Top Expert 2012
Commented:
You have a PC with what looks like a SCSI adapter - there are two identical Seagate 15K Cheetah drives attached to it.  If they are set up as RAID, you cannot just add another drive to the controller, since they may be striped (RAID-0) or mirrored (RAID-1).

First, identify what controller you have, go into the controller BIOS and identify how the drives are configured, and then post what you want to do with the additional drive (which will have to be SCSI, but there are many different kinds of SCSI drives).

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Commented:
In the BIOS menu, I see the SAS/SATA Drive Setup in the Device Tab.
And then it has something like Marvell STAT/SAS controller.
noxchoIT Product Manager
Top Expert 2009
Commented:
The Marvel is chip on your PCI SATA RAID controller and what your see in startup menu is just the information to which slot the drives are connected.
Top Expert 2012
Commented:
Looking over the drive spec again, I was wrong - these two drives are Cheetah 15K SAS drives, not SCSI.  The controller is a SATA/SAS controller, which means you should be able to add SAS or SATA drives.

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