IOS Image Boot Sequence

[kamrannaseem]

Hi All,

I am using cisco 3750G switch i have got two images in flash, I want to make second image as my defeult boot image, how do i do that ?

Any help will be much appriciated.

Many thanks,

Kamran.

[Ivan Shirshin]

Hi,

1. Check configured boot strings:

     show run | i boot

2. Delete all boot lines from config:

     conf t

          no boot system ...

3. Configure first the boot string for the default image:

         boot system ...

then configure 2nd, etc. boot string if needed.

4. Save configuration:

     copy run start

Kind Regards,
Ivan Shirshin

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[kamrannaseem]

Hi Ivan,

Got this error:

Loading "flash:c3750-ipbasek9-mz.122-35.SE5"...flash:c3750-ipbasek9-mz.122-35.SE5: is a directory

Error loading "flash:c3750-ipbasek9-mz.122-35.SE5"

many thanks.

Kamran.

[Ivan Shirshin]

Hi Kamran,

It is as it says  - you specified directory instead of file in the boot string. File is inside those dirs.

Attach the following outputs, please:

sh run | i boot

dir /all

dir flash:c3750-ipbasek9-mz.122-35.SE5/

Kind Regards,
Ivan Shirshin

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[kamrannaseem]

Hi Ivan,

Sorry I am bit confused.

Should i issue this command:

Switch(config)#boot system flash:/c3750-ipbasek9-mz.122-35.SE5

Many thanks.

Kamran.

[InayathUlla Sharieff]

Kamran,

AS Ivan stated you need to specifiy the boot system to take the image which you want to be loaded up with.

Eg:

IOS will boot system images in the order the are written.

so

Line 1:

boot system flash: c3750-ipbasek9-mz.122-35.SE5.bin

line 2:

boot system flash: c3750-i9-mz.122.se3.bin

HTH

Regards

Inayath

[kamrannaseem]

Hi Sharieff,

Could you please explain that in detail how do i change that, its my first time i am doing this.

dont have an idea how to change it .

thanks.

Kamran.

[InayathUlla Sharieff · Accepted solution]

Kamran,

Sure we will try to help you here.

First thing to check whats the boot system currently configured and you can check this by running the following cmd:

1- show run | i boot

If you happen to see any boot sytem file is set then kindly remove the same by following command:

boot system flash:/c3750-ipbasek9-mz.122-35.SE4 >> Found SE4 image on my switch.

2- Remove this image:

config t

Switch(config)#no boot system flash:/c3750-ipbasek9-mz.122-35.SE4 >>> Remvoing SE4 image from the boot.

3- configure the boot system with the image name which you want the device to boot with:

config t

Switch(config)#boot system flash:/c3750-ipbasek9-mz.122-35.SE5>> SE5 is the new image whcih i want my device to boot.

4- Save (Wr mem / copy run start)

5- Reboot.

Once the device is bootup it will come up iwth the new image.

HTH

Regards

Inayath

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[kamrannaseem]

Hi Sharieff,

it shows me the following when i issue the command

Switch#sh run | i boot

boot-start-marker

boot-end-marker

Many thanks.

Kamran.

[Ivan Shirshin · Accepted solution]

Hi,

Can you also post here the outputs of this 2 commands?

     dir /all

     dir flash:c3750-ipbasek9-mz.122-35.SE5/

Kind Regards,
Ivan Shirshin

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[kamrannaseem]

Hi,

Switch#dir /all
Directory of flash:/

    2  -rwx    12930816   Jan 1 1970 00:30:38 +00:00  c3750-ipservicesk9-mz.122-55.SE1.bin
    3  -rwx        3096   Mar 1 1993 00:23:45 +00:00  multiple-fs
    5  -rwx        2692   Mar 1 1993 00:04:34 +00:00  config.text
    6  -rwx        1941   Mar 1 1993 00:04:35 +00:00  private-config.text
    7  drwx         192   Mar 1 1993 00:14:06 +00:00  c3750-ipbasek9-mz.122-35.SE5

32514048 bytes total (9366016 bytes free)

Switch#dir flash:c3750-ipbasek9-mz.122-35.SE5/
Directory of flash:c3750-ipbasek9-mz.122-35.SE5/

    8  -rwx     7755515   Mar 1 1993 00:13:05 +00:00  c3750-ipbasek9-mz.122-35.SE5.bin
    9  drwx        4224   Mar 1 1993 00:13:41 +00:00  html
  510  -rwx         614   Mar 1 1993 00:14:06 +00:00  info

32514048 bytes total (9366016 bytes free)

Many thanks,

[InayathUlla Sharieff]

Then, Just one command is needed :

Switch(config)#boot system flash:c3750-ipbasek9-mz.122-35.SE5

Save and reboot and let us know the result.

[Ivan Shirshin]

Hi Inayath,

This is dir

    7  drwx         192   Mar 1 1993 00:14:06 +00:00  c3750-ipbasek9-mz.122-35.SE5

Kamran has to specify full path.

Kind Regards,
Ivan Shirshin

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[Ivan Shirshin · Accepted solution]

Hi,

Do the following steps:

conf t

boot system flash:/c3750-ipbasek9-mz.122-35.SE5/c3750-ipbasek9-mz.122-35.SE5.bin

end

write

reload

The switch should load with new image then. Check with "show version" after it boots up.

Kind Regards,
Ivan Shirshin

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[InayathUlla Sharieff]

Ivan,

Oops missed that. Yup you are right.

Regards

Inayath