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Re: WDCTL_RST failed for drive 0 / wd0: IDENTIFY failed (SATA autodetection issue after installation)

Hi Rin,

thank you for your quick response. I can first confirm that the controller installed in the system is ahcisata(4). I have two different model variants where the problem occurs - on one very reliably at every boot, and on the other almost after every cold start (and only two of four disks affected on the latter). I will build and test the kernel with AHCISATA_EXTRA_DELAY and give feedback in a timely manner.

Many greetings

Am 24.05.2022 um 18:23 schrieb Rin Okuyama:

The recent change for probe timing should only affect ahcisata(4).
Is your SATA controller ahcisata(4)? If so,

(1) please try kernel built with:


If it works around the problem,

(2) please send us full dmesg of your machine.

Then, we can add your controller to the quirk list. At once it is
registered to the list, AHCISATA_EXTRA_DELAY option is no longer


On 2022/05/25 0:49, Matthias Petermann wrote:
A small addendum: disabling the Intel Platform Trust technology in the BIOS did not help me (had read this in another post of the linked thread).

However, by plugging in additional USB devices (a mouse) I apparently caused the necessary delay, which the disk would have needed in the first case to execute the WDCTL_RST without errors. This "workaround" is a shaky one though, an extremely close call. I don't even want to think about what I would do to a production server if this happened to me on a reboot.

Kind regards

Am 24.05.2022 um 17:31 schrieb Matthias Petermann:

Hello all,

with one of the newer builds of 9.99 (unfortunately I can't narrow it down more) I have a problem on a NUC5 with a Seagate Firecuda SATA hard drive (hybrid HDD/SSD).

As long as I boot from the USB stick (for installation, as well as later for booting the kernel with root redirected to the wd0) the hard drive wd0 is recognized correctly and works without problems.

When I boot directly from the wd0 hard drive, I get through the boot loader fine, which also still loads the kernel correctly into memory. However, when running the initialization or hardware detection, there is then a problem with the initialization of wd0:

WDCTL_RST failed for drive 0
wd0: IDENTIFY failed

The error pattern seems to be not quite rare and probably the closest to it is this post:

Recent changes to the SATA autodetection timing are mentioned there. This would fit my experience, since I had the problem neither with 9.1 (build from 02/16/2021) nor with older 9.99 versions. Does anyone know more specifics about this timing thing, as well as known workarounds if there are any? I have several NUC5s with exactly this model of hard drive running stably for several years - it would be a shame if I now have to replace them for such a reason.

Many greetings

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