Node fails to boot due to missing boot device

• The AutoSupport trigger event is shown below.

HA Group Notification from NodeA (Health Monitor process nphm: BootmediaReplaceAlert[mSATA (Micron 5400 XXXXXXXXXXXXX)]) ALERT

• Node fails to boot with the following error during the ONTAP boot process:

*******************************************************
*** Booted from Backup Boot Device,  Primary Loader ***
*******************************************************
ACPI RSDP Found at 0x79867000
ERROR: Did not boot from primary loader in primary boot media. Autoboot will be disabled.

• Autoboot of Primary image failed. Device not found (-6)

Boot Loader version 8.6.1
Copyright (C) 2000-2003 Broadcom Corporation.
Portions Copyright (C) 2002-2025 NetApp, Inc. All Rights Reserved.

Can't find primary boot device u0a.0
Can't find backup boot device u0a.1
ACPI RSDP Found at 0x6f7fe014

Starting AUTOBOOT press Ctrl-C to abort...
Could not load fat://boot0/X86_64/freebsd/image1/kernel:Device not found

ERROR: Error booting OS on: 'boot0' file: fat://boot0/X86_64/Linux/image1/vmlinuz (boot0,fat)
ERROR: Error booting OS on: 'boot0' file: fat://boot0/X86_64/freebsd/image1/kernel (boot0,fat)
Autoboot of PRIMARY image failed. Device not found (-6)