CSCux64212 - Display of show ver has %22flash1unknown%22 at 3.8.0E with 0x2101

[amarjeet.singh.ext@yesbank.in]

flash is showing unknown for switch 4500

below snap, suggest

System image file is "flash1:unknown"
Jawa Revision 3, RadTrooper Revision 0x0.0x41, Conan Revision 0x1B9E

[vklimanek2]

could not upgrade IOS and seen similar output in show version, once I changed config register to 0x2102 it got resolved, see logs below:

cat4500(config)#no boot system
cat4500(config)#boot system bootflash:cat4500e-universalk9.SPA.03.11.05.E.152-7.E5.bin
cat4500(config)#end
cat4500#show boot
BOOT variable = bootflash:cat4500e-universalk9.SPA.03.11.05.E.152-7.E5.bin,12;
CONFIG_FILE variable does not exist
BOOTLDR variable does not exist
Configuration register is 0x2101

cat4500#reload

...

cat4500#show ver

Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.08.06.E RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2018 by Cisco Systems, Inc.
Compiled Thu 05-Apr-18 06:32 by prod_rel_team

ROM: 15.0(1r)SG3
cat4500 uptime is 4 minutes
System returned to ROM by reload
System image file is "flash1:unknown"
Jawa Revision 7, Winter Revision 0x0.0x1C

Last reload reason: Reload command

...

cat4500(config)#config-register ?
<0x0-0xFFFF> Config register number

cat4500(config)#config-register 0x2102
cat4500(config)#end
cat4500#show boot
BOOT variable = bootflash:cat4500e-universalk9.SPA.03.11.05.E.152-7.E5.bin,12;
CONFIG_FILE variable does not exist
BOOTLDR variable does not exist
Configuration register is 0x2101 (will be 0x2102 at next reload)

cat4500#wr
Building configuration...
Compressed configuration from 67125 bytes to 13765 bytes[OK]
cat4500#reload
Proceed with reload? [confirm]

cat4500#show ver
Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.11.05.E RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2021 by Cisco Systems, Inc.
Compiled Mon 13-Sep-21 18:20 by mcpre

ROM: 15.0(1r)SG3
cat4500 uptime is 12 minutes
System returned to ROM by reload
System restarted at 07:42:22 CET Thu Dec 26 2024
System image file is "bootflash:cat4500e-universalk9.SPA.03.11.05.E.152-7.E5.bin"
Jawa Revision 7, Winter Revision 0x0.0x1C

Last reload reason: Reload command

[Leo Laohoo]

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@vklimanek2 wrote:

Version 03.11.05.E

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The switch has upgraded to 03.11.05.  What is the problem?

[vklimanek2]

Hello Leo, I just wanted to point out we have seen same symptoms and also upgrade did not complete to new version while having configured conf-reg to 0x2101 and changing value to 0x2102 resolved both

[Leo Laohoo]

0x2101 = Boot the config, ignore boot variable string and boot the first image found in the flash

0x2102 = Boot the config, read the boot-variable string and boot the firmware stated in the boot-variable string.