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Node stuck in boot loop due to Device 20/0/0 (IO4) missing

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fas-systems
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HW
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Applies to

  • AFF-C80
  • AFF-A90
  • ASA-A90
  • NVRAM12 Module

Issue

  • Can't boot ONTAP.
  • Node enters a boot loop with the following error messages.

Initializing System Memory ...
Loading Device Drivers ...
Configuring Devices ...
Device 20/0/0 (IO4) missing
Device(s) in slot missing, attempting to recover it.
System is resetting.

Boot Loader version 8.4.4
Copyright (C) 2000-2003 Broadcom Corporation.
Portions Copyright (C) 2002-2025 NetApp, Inc. All Rights Reserved.ACPI RSDP Found at 0x777fe014
BIOS POST Failure(s) detected: PCIe device missing error detected. Abort AUTOBOOT

  • The PCI-HIERARCHY.XML log confirms the NVRAM module in Slot 4.
--------------------------------------
Dv[000e](20,0,0) in slot 4: NETAPP NVRAM12 in slot 4 on Controller
-------------------------------------

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