Re: SATA disks disabled on boot

[Phillip Susi <psusi@ubuntu.com>]

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On 2/3/2015 2:32 PM, Nuno Magalhães wrote:
> The BIOS shows the regular Primary/Secondary IDE Master/Slave (to 
> which only the CDROM is attached) alongside SATA. It doesn't seem
> like SATA is the option, bu rather that both IDE and SATA are seen
> as current usable interfaces (at the time the BIOS was released:
> 2010). It does have NVRAID, which is disabled (i use mdadm).

Typically there is a knob that toggles between three states: IDE,
AHCI, and RAID.  RAID really is AHCI just with a different PCI
identifier that causes windows to load their proprietary driver that
does the software raid.  If you only have an on/off switch for the
raid, then try switching it on.

> There is no mention of AHCI that i could find.
> 
> Regardless, as long as linux sees the HDDs on boot (which it does
> even with PUIS), does the BIOS have any influence in this issue?

Only in that it is configuring the controller to behave like a legacy
IDE controller instead of a proper SATA one, and that does cause some
differences in how the kernel handles the drives.  It *shouldn't*
cause the problem you are seeing, but it does prevent the system from
issuing a hard reset to the drives, which *may* cause them to come around.


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