How to delete the boot variable shown in the bootvar

Posted on 2014-02-27
Medium Priority
Last Modified: 2014-03-01
Hi guys,
How can I delete the boot variable shown in the bootvar result below?
Just upgraded this 4506, and deleted 53.sg4.
As you can see I have only one boot image in the directory, and I want the switch to boot to that image i.e. cat4500e-ipbasek9-mz.122-54.SG1.bin.
Directory of bootflash:/
    6  -rw-    25093330  Feb 26 2014 11:36:06 +00:00  cat4500e-ipbasek9-mz.122-54.SG1.bin
128206848 bytes total (93587456 bytes free)

-----¿C01#sh bootvar
BOOT variable = bootflash:cat4500e-ipbase-mz.122-53.SG4.bin,12;bootflash:cat4500e-ipbasek9-mz.122-54.SG1.bin,12;
CONFIG_FILE variable does not exist
BOOTLDR variable does not exist
Configuration register is 0x2102

As you can see below I have tried deleting it, but getting the error below
boot system bootflash:cat4500e-ipbase-mz.122-53.SG4.bin
boot system bootflash:cat4500e-ipbasek9-mz.122-54.SG1.bin
----¿C01#delete ?
  /force          Force delete
  /recursive      Recursive delete
  bootflash:      File to be deleted
  cat4000_flash:  File to be deleted
  nvram:          File to be deleted
  slot0:          File to be deleted

---¿C01#delete bootflash:cat4500e-ipbase-mz.122-53.SG4.bin
Delete filename [cat4500e-ipbase-mz.122-53.SG4.bin]?
Delete bootflash:cat4500e-ipbase-mz.122-53.SG4.bin? [confirm]
%Error deleting bootflash:cat4500e-ipbase-mz.122-53.SG4.bin (File not found)
Question by:gbolly1913
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Accepted Solution

netdsg earned 1500 total points
ID: 39892766
Since the ipbase image is not on the flash the switch cannot boot to it.  The boot system commands tell the switch the order of preference to boot an image.  It will try to boot the ipbase image, not find it, and fail.  It will then boot the ipbaseK9 image.  to verify this boot the switch and execute a 'show version' command.  This should reveal the switch running on the ipbaseK9 image.

In order to remove the ipbase image from the config file boot preferences try the following commands:

config t
no boot system bootflash:cat4500e-ipbase-mz.122-53.SG4.bin

### verify

show run | inc boot

### if satisfied save the config file.

wr mem

Author Comment

ID: 39893708
Thanks netdsg,  if you look at the  last part of my question above you can see that i have done that, with error below coming up.

C01#delete bootflash:cat4500e-ipbase-mz.122-53.SG4.bin

Delete filename [cat4500e-ipbase-mz.122-53.SG4.bin]?
Delete bootflash:cat4500e-ipbase-mz.122-53.SG4.bin? [confirm]
%Error deleting bootflash:cat4500e-ipbase-mz.122-53.SG4.bin (File not found)

So now i have two image on the same line in boot avriable as shown below.

BOOT variable = bootflash:cat4500e-ipbase-mz.122-53.SG4.bin,12;bootflash:cat4500e-ipbasek9-mz.122-54.SG1.bin,12;

Featured Post

Need protection from advanced malware attacks?

Look no further than WatchGuard's Total Security Suite, providing defense in depth against today's most headlining attacks like Petya 2.0 and WannaCry. Keep your organization out of the news with protection from known and unknown threats.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This paper addresses the security of Sennheiser DECT Contact Center and Office (CC&O) headsets. It describes the DECT security chain comprised of “Pairing”, “Per Call Authentication” and “Encryption”, which are all part of the standard DECT protocol.
David Varnum recently wrote up his impressions of PRTG, based on a presentation by my colleague Christian at Tech Field Day at VMworld in Barcelona. Thanks David, for your detailed and honest evaluation!
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…
Suggested Courses

800 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question