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Troubleshoot booting errors " disk/: no major number" or "channel-devices: no major number" or "virtual-devices: no major number" or "Cannot load drivers for *disk@0:a Can't load the root filesystem" (Doc ID 2807717.1)

Last updated on SEPTEMBER 16, 2021

Applies to:

Solaris Operating System - Version 11.0 and later
Information in this document applies to any platform.

Symptoms

Resetting...
NOTICE: Entering OpenBoot.
NOTICE: Fetching Guest MD.
NOTICE: Starting secondary cpus.
NOTICE: Initializing LDCs.
NOTICE: Probing PCI devices.
NOTICE: Finished PCI probing.

SPARC S7-2, No Keyboard
Copyright (c) 1998, 2021, Oracle and/or its affiliates. All rights reserved.
OpenBoot 4.43.6, 249.7500 GB memory installed, Serial #XYZXYZXYZ.
Ethernet address 0:XX:YY:ZZ:99:00, Host ID: 1234567.



Boot device: /virtual-devices@100/channel-devices@200/disk@0:a File and args:
SunOS Release 5.11 Version 11.3 64-bit
Copyright (c) 1983, 2019, Oracle and/or its affiliates. All rights reserved.
disk: no major number
channel-devices: no major number
virtual-devices: no major number
Cannot load drivers for /virtual-devices@100/channel-devices@200/disk@0:a
Can't load the root filesystem
Type 'go' to resume
{0} ok

 

One other clue is that when we try to update the boot archive  after we booted with a diferent boot environment or net/dvd/iso we see a cannot find/No such file or directory for files in /etc.

cannot find: /a/etc/cluster/nodeid: No such file or directory
cannot find: /a/etc/driver_aliases: No such file or directory
cannot find: /a/etc/mach: No such file or directory
cannot find: /a/etc/pci.conf: No such file or directory
cannot find: /a/etc/rtc_config: No such file or directory
cannot find: /a/etc/security/mwac.conf: No such file or directory
updating /a/platform/sun4v/boot_archive

 

Changes

 Canceling or unextected reboot/panic/power outages during update or upgrade process

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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